Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Structure And Magnetic Properties Of Ferromagnetic Shape Memory Alloys Containing Iron
Download The Structure And Magnetic Properties Of Ferromagnetic Shape Memory Alloys Containing Iron full books in PDF, epub, and Kindle. Read online The Structure And Magnetic Properties Of Ferromagnetic Shape Memory Alloys Containing Iron ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Structure and Magnetic Properties of Ferromagnetic Shape Memory Alloys Containing Iron by :
Download or read book The Structure and Magnetic Properties of Ferromagnetic Shape Memory Alloys Containing Iron written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the structural and magnetic properties of Iron based ferromagnetic shape memory alloys Pd57In25Fe18, Ti50Pd40Fe10, Ti50Pd35Fe15, FeMnSi, Fe66.7Mn26.8Si6.5 and Fe57.4Mn35Si7.6 is reported. Magnetisation measurements and high resolution powder neutron diffraction measurements were used to characterise the structural properties of each alloy. The parent phase of the Pd57In25Fe18 specimen has a FCC unit cell, space group Fm3m and lattice parameter a=6.293 ± 0.006Å. The Fe atoms are essentially equally distributed on to the 4a and 4b sites with the Pd occupying the 8c site. On cooling the sample transforms into a tetragonal structure with I 4 / mmm space group and cell parameters a=4.097 ± 0.004Å and c=7.289 ± 0.007Å. Magnetisation measurements performed on the specimen found Tc=140 ± 10K and a moment per formula unit of 1.39 ± 0.03μB. The inverse susceptibility has a Curie-Weiss variation, which yields a paramagnetic Curie temperature of 159 ± 10K, an effective paramagnetic moment of 6.93 ± 0.06μB and a paramagnetic moment μp of 2.86 ± 0.03μB which is close to that generally observed for Fe on an FCC lattice. Neutron diffraction measurements performed on Ti50Pd50-xFex compounds have confirmed the parent phase to be a cubic B2-type structure with the Pm3m space group with lattice parameters a=3.134 ± 0.007Å when x=10 and a=3.118 ± 0.009Å when x=15. On cooling, the martensitic phase transformation occurs and the alloys transform into an orthorhombic B19 structure (Pmma) with a 3-fold modulation. The lattice parameters were determined as a=13.853 ± 0.001Å, b=2.872 ± 0.001Å and c=4.513 ± 0.002Å when x=10 and a=13.465 ± 0.002Å, b=2.923 ± 0.002Å and c=4.526± 0.001Å when x=15. The Curie temperature has been estimated using the Brillouin J=1 function as Tc~ 470 ± 10K when x=10 and Tc~523 ± 10K when x=15. For the FeMnSi specimen, the stoichiometry of alloys is consistent with that of C1b compounds. The F 43m space group was employed for the cub.
Book Synopsis The Structure and Magnetic Properties of Ferromagnetic Shape Memory Alloys Containing Iron by : Amer Sheikh
Download or read book The Structure and Magnetic Properties of Ferromagnetic Shape Memory Alloys Containing Iron written by Amer Sheikh and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the structural and magnetic properties of Iron basedferromagnetic shape memory alloys Pd57In25Fe18, Ti50Pd40Fe10, Ti50Pd35Fe15, FeMnSi, Fe66.7Mn26.8Si6.5 and Fe57.4Mn35Si7.6 is reported. Magnetisation measurements and highresolution powder neutron diffraction measurements were used to characterise the structuralproperties of each alloy. The parent phase of the Pd57In25Fe18 specimen has a FCC unit cell, space group Fm3m and lattice parameter a=6.293? 0.006?. The Fe atoms are essentiallyequally distributed on to the 4a and 4b sites with the Pd occupying the 8c site. On cooling thesample transforms into a tetragonal structure with I 4 / mmm space group and cell parametersa=4.097? 0.004? and c=7.289? 0.007?. Magnetisation measurements performed on thespecimen found Tc=140? 10K and a moment per formula unit of 1.39? 0.03?B. The inversesusceptibility has a Curie-Weiss variation, which yields a paramagnetic Curie temperature of159? 10K, an effective paramagnetic moment of 6.93? 0.06?B and a paramagnetic moment?pof 2.86? 0.03?B which is close to that generally observed for Fe on an FCC lattice. Neutrondiffraction measurements performed on Ti50Pd50-xFex compounds have confirmed the parentphase to be a cubic B2-type structure with the Pm3m space group with lattice parametersa=3.134? 0.007? when x=10 and a=3.118? 0.009? when x=15. On cooling, the martensiticphase transformation occurs and the alloys transform into an orthorhombic B19 structure(Pmma) with a 3-fold modulation. The lattice parameters were determined as a=13.853?0.001?, b=2.872? 0.001? and c=4.513? 0.002? when x=10 and a=13.465? 0.002?, b=2.923? 0.002? and c=4.526? 0.001? when x=15. The Curie temperature has been estimated usingthe Brillouin J=1 function as Tc~ 470? 10K when x=10 and Tc~523? 10K when x=15. For theFeMnSi specimen, the stoichiometry of alloys is consistent with that of C1b compounds. TheF 43m space group was employed for the cubic phase with a lattice parameter a=5.684?0.008?. On cooling the material transforms into a hexagonal martensite phase with 3 P6 /mcmIIspace group and lattice parameters, a=6.867? 0.001? and c=4.772? 0.002?. In theFe57.4Mn35Si7.6 compound there is no structural phase transition, the system orders in a FCC unitcell with space group Fm3m and lattice parameters a=3.616? 0.007?. In the Fe66.7Mn26.7Si6.5case at 500K the alloy orders in a FCC unit cell with space group Fm3m and latticeparameters a=3.611? 0.001?. On cooling, the material transforms into a HCP cell with thespace group 3 P6 / mmc and the lattice parameters a=2.540? 0.002? and c=4.108? 0.001?. Inthe FeMnSi alloy below 69K there is the onset of an incommensurate phase down to 5K, all theFe-Mn-Si based alloys order with a type-1 FCC antiferromagnetic structure. In the case ofFeMnSi, TN=69? 3K and for the Fe57.4Mn35Si7.6 and Fe66.7Mn26.8Si6.5 specimens TN has beenestimated using the Brillouin J=2 function, to be TN~389? 10K and 315? 10K respectively. From neutron measurements, at 5K a magnetic moment of 2.69? 0.04?B per site and 2.20?0.05?B per site was calculated for the Fe57.4Mn35Si7.6 and Fe66.7Mn26.8Si6.5 specimensrespectively.
Book Synopsis Magnetic Shape Memory Alloys by : Xuexi Zhang
Download or read book Magnetic Shape Memory Alloys written by Xuexi Zhang and published by Springer Nature. This book was released on 2021-11-14 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically describes the fundamentals of Magnetic shape memory alloys (MSMAs), with an emphasis on low-dimensional structures such as foams, microwires and micro-particles. The respective chapters address basic concepts and theories, the fabrication of various architectures, microstructure tailoring, property optimization and cutting-edge applications. Taken together, they provide a clear understanding of the correlation between processing and the microstructural properties of MSMAs, which are illustrated in over two hundred figures and schematics. Given its scope and format, the book offers a valuable resource for a broad readership in various fields of materials science and engineering, especially for researchers, students and engineers.
Book Synopsis Ferromagnetic Shape Memory Alloys II by : Volodymyr A. Chernenko
Download or read book Ferromagnetic Shape Memory Alloys II written by Volodymyr A. Chernenko and published by Trans Tech Publications Ltd. This book was released on 2009-12-03 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). This work on Ferromagnetic Shape Memory Alloys contains selected peer-reviewed papers. Such materials belong to the most exciting and fastest-growing group of martensitic multifunctional materials. The selected papers cover the following topics of: Basic phenomena and theory; Structure and magnetic properties; Magnetomechanics and magnetocaloric effect; Thin films and composites; Modeling and simulations and Processing and engineering.
Book Synopsis Study on Phase Stability, Structural and Magnetic Properties of Ni-Mn-Ga Ferromagnetic Shape Memory Alloys by Ab Initio Calculations by : Nan Xu
Download or read book Study on Phase Stability, Structural and Magnetic Properties of Ni-Mn-Ga Ferromagnetic Shape Memory Alloys by Ab Initio Calculations written by Nan Xu and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ni-Mn-Ga ferromagnetic shape memory alloys (FSMAs) with chemical composition close to Ni2MnGa have received great attention due to their giant magnetic shape memory effect and fast dynamic response. In this work, a series of first-principles calculations have been performed within the framework of the Density Functional Theory (DFT) using the Vienna Ab initio Software Package (VASP). For the stoichiometric Ni2MnGa ferromagnetic shape memory alloy, the oscillation of Ni magnetic moment that depends on the atomic shuffling in the superstructure dominates the distribution of the total magnetic moment per Ni2MnGa unit. The structure change-associated total magnetic moment has been found to increase for Ni2MnGa unit from the cubic austenite to the tetragonal NM martensite through the monoclinic modulated martensites. For the off-stoichiometric Ni2MnGa ferromagnetic shape memory alloys, Ni-doping stabilizes the non-modulated martensite (NM) with simple tetragonal crystal structure, whereas proper Mn-doping stabilizes the seven-layered modulated (7M) martensite with monoclinic structure. Martensitic transformation experiences much larger driving force than that of the intermartensitic transformation. Moreover, the total magnetic moment of the three series of alloys is mainly dominated by their Mn content with little phase state dependence. The average Ni and Mn moments display both composition and phase state dependences. The perturbation of the magnetic moments by atom substitution is mainly located in the antisite and its close neighbors. It is mainly dominated by their Mn environment (distance and number). Insights into fundamental aspects such as phase stability and magnetic properties in Ni-Mn-Ga FSMAs are of great significance to improve the functional performances and to design new promising FSMAs.
Book Synopsis Ferromagnetic Shape Memory Alloys by : Lluis Manosa
Download or read book Ferromagnetic Shape Memory Alloys written by Lluis Manosa and published by Trans Tech Publications Ltd. This book was released on 2008-06-19 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). Multiferroic shape-memory alloys that exhibit both ferroelastic and ferromagnetic properties have recently attracted much attention. They belong to the family of so-called smart materials and are future-generation materials that are likely to be useful in cutting-edge technologies. Apart from the theoretical challenge of understanding their fascinating properties, the quest to harness them for practical use is also attracting many scientists and engineers from all over the world.
Book Synopsis An Analysis of Ferromagnetic Shape Memory Alloys Produced by Melt Spinning, Sputtering and Pulsed Laser Deposition by : Neil Dearing
Download or read book An Analysis of Ferromagnetic Shape Memory Alloys Produced by Melt Spinning, Sputtering and Pulsed Laser Deposition written by Neil Dearing and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferromagnetic shape memory alloys (FSMA) have recently attracted much interest and research because of their large magnetic-field induced strain. Strains of up to 10% have been reported in single crystals of Ni2MnGa at room temperature. The mechanism of twin boundary motion is understood to be responsible for the strain in FSMA?s and theoretically allows for a full crystal lattice distortion strain, which is 10% in the case of orthorhombic martensites and 5-6% in the case of tetragonal martensites. These strains however are only achievable in single crystals and much smaller strains have been observed in polycrystalline samples. Here, competition of the randomly orientated grains restrict the cooperative twin boundary motion that is evident in single crystals. Melt spun ribbons are often highly textured and may offer a method of producing ribbons in a form useful as a start material for applications, i.e. basis of a useful?bulk? compact form. Magnetic and structural properties of melt spun Ni-Mn-Ga have previously been reported. Applied magnetic field has been shown to affect the transformation strain on cooling. Ni-Mn-Ga alloys form a Heusler (L21) lattice which, on cooling, undergoes a diffusionless transformation beginning at the martensite start temperature Ms into either a tetragonal or orthorhombic martensite, both of which are highly twinned. The reverse transformation begins at the austenite start temperature As and both transformations occur over a range of approximately 10K. The type of martensite formed depends strongly on the composition of the sample and its thermal history. The influence of atomic order in Ni-Mn-Ga alloys has also been studied. It has been found that the degree of atomic order plays a large part in determining the martensitic transition temperature. This temperature is suppressed significantly in the disordered B2 structure where there is little correlation of the Mn and Ga atoms at the body center. Ni2MnGa undergoes a B2 to L21 (Heusler) transition at 1071K on cooling. In this work the structural and magnetic properties of melt spun Ni-Mn-Ga ribbons are presented and the effect of an applied magnetic field on the transformation strain is shown for the case of annealed ribbons under tensile stress. It is the intention of this work to explore the properties of melt-spun ribbons of the ferromagnetic shape memory alloys Ni-Mn-Ga and Ni-Fe-Ga with the addition of Tb. A range of compositions of both alloys have been created and analysed for both structural and magnetic properties. Melt spun ribbons are usually either amorphous or nanocrystalline, so the effect of heat treatments to both relieve stress and re-crystallise the ribbons is also explored. This provides some insight into how the crystal structure and magnetic properties evolve with annealing temperature. Thin films of these ferromagnetic shape memory alloys were also produced by both sputtering and pulsed laser deposition in order to characterise their behaviour and gain some insight into the growth conditions necessary to successfully produce thin films of ferromagnetic shape memory alloys. This was done because thin films grown at low temperatures can have similar properties to the melt spun ribbons, in that they are nanocrystalline or amorphous. It was hoped that producing and analysing these thin films would yield some more information about the behaviour of polycrystalline ferromagnetic shape memory alloys.
Book Synopsis Magnetic Properties of Alloys Containing Mischmetal, Cobalt, Copper, Iron, and Magnesium by : John W. Walkiewicz
Download or read book Magnetic Properties of Alloys Containing Mischmetal, Cobalt, Copper, Iron, and Magnesium written by John W. Walkiewicz and published by . This book was released on 1981 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Properties of Metals and Alloys by : American Society for Metals
Download or read book Magnetic Properties of Metals and Alloys written by American Society for Metals and published by . This book was released on 1959 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetism and Structure in Functional Materials by : Antoni Planes
Download or read book Magnetism and Structure in Functional Materials written by Antoni Planes and published by Springer Science & Business Media. This book was released on 2010-02-11 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetism and Structure in Functional Materials addresses three distinct but related topics: (i) magnetoelastic materials such as magnetic martensites and magnetic shape memory alloys, (ii) the magnetocaloric effect related to magnetostructural transitions, and (iii) colossal magnetoresistance (CMR) and related manganites. The goal is to identify common underlying principles in these classes of materials that are relevant for optimizing various functionalities. The emergence of apparently different magnetic/structural phenomena in disparate classes of materials clearly points to a need for common concepts in order to achieve a broader understanding of the interplay between magnetism and structure in this general class of new functional materials exhibiting ever more complex microstructure and function. The topic is interdisciplinary in nature and the contributors correspondingly include physicists, materials scientists and engineers. Likewise the book will appeal to scientists from all these areas.
Download or read book Bibliography written by Pierre Villars and published by Walter de Gruyter. This book was released on 2012-12-21 with total page 1827 pages. Available in PDF, EPUB and Kindle. Book excerpt: By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.
Book Synopsis Shape Memory Alloys by : Vasiliy Buchelnikov
Download or read book Shape Memory Alloys written by Vasiliy Buchelnikov and published by Materials Research Forum LLC. This book was released on 2018-12-05 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents selected, peer reviewed papers from the 3rd International Conference on “Shape Memory Alloys” (SMA 2018) Keywords: Shape Memory Alloys, Martensitic Transformations, Biocompatible Porous Materials, Ni-Mn Intermetallic Alloys, Superelastic Alloys, Ti-Ni Shape Memory Alloys, Novel Superelastic Ti-Zr-Based Alloys, Solid State Cooling, Pulsed Electron Beam Treatment, Surface Modification, Carbon Polytypes, Fluorographene, Diamond-Like Phase Transformations, Solid Oxide Fuel Cell, Multiferroics, Fe-Ga Phase Diagram, Fe-Ge Phase Diagram , Fe-Al Phase Diagram.
Book Synopsis Rapid-Solidification Effect on Magnetostriction in Iron-based Ferromagnetic Shape Memory Alloy by : Yasubumi Furuya
Download or read book Rapid-Solidification Effect on Magnetostriction in Iron-based Ferromagnetic Shape Memory Alloy written by Yasubumi Furuya and published by . This book was released on 2001 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fe-29.6at%Pd ferromagnetic shape memory alloy (FSMA) ribbon formed by rapidly solidified, melt-spinning methods is expected to be useful as a new type of material which shows giant magnetostriction as well as quick response. The giant magnetostriction in the rolling direction depends strongly on applied magnetic-field direction and has a maximum value of 8 x 10(exp -4) when the field is normal to the surface. This phenomenon is caused by the rearrangements of activated martensitic twin variants. The inverse phase transformation temperatures (As) obtained from Laser micrographs and magnetization vs. temperature curve are ^ 307 K and 400 ^ 440 K, respectively. We analyze magnetostriction, magnetic property and crystal structure of Fe-29.6at%Pd bulk sample before rapid solidification and the ribbon sample. From these results. it can be concluded that remarkable anisotropy of giant magnetostriction of ribbon sample is caused by the fine structure formed by the melt-spinning method. It may be possible to apply this method successfully to other FSMA and Ni2MnGa, which is difficult to manufacture owing to its brittleness.
Book Synopsis Ferromagnetic Properties of Metals and Alloys by : Kurt Hoselitz
Download or read book Ferromagnetic Properties of Metals and Alloys written by Kurt Hoselitz and published by . This book was released on 1952 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Magnetic Shape Memory Materials by : Volodymyr A. Chernenko
Download or read book Advances in Magnetic Shape Memory Materials written by Volodymyr A. Chernenko and published by Trans Tech Publications Ltd. This book was released on 2011-05-17 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special topic volume with invited peer reviewed papers only.
Book Synopsis Handbook of Magnetic Materials by : Ekkes Bruck
Download or read book Handbook of Magnetic Materials written by Ekkes Bruck and published by North Holland. This book was released on 2019-11 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Magnetic Materials, Volume 28, covers the expansion of magnetism over the past few decades and its applications in research, notably the magnetism of several classes of novel materials that share the presence of magnetic moments with truly ferromagnetic materials. The book is an ideal reference for scientists active in magnetism research, providing readers with novel trends and achievements in magnetism. Each article contains an extensive description given in graphical, as well as tabular form, with much emphasis placed on the discussion of the experimental material within the framework of physics, chemistry and materials science. Comprises topical review articles written by leading authorities Includes a variety of self-contained introductions to a given area in the field of magnetism without requiring recourse to the published literature Introduces given topics in the field of magnetism Describes novel trends and achievements in magnetism
Book Synopsis Ab-initio First Principle Modeling of Structural and Magnetic Phase Transformations in Co-Ni-Al Based Shape Memory Alloys by : Hassan S Thawabi
Download or read book Ab-initio First Principle Modeling of Structural and Magnetic Phase Transformations in Co-Ni-Al Based Shape Memory Alloys written by Hassan S Thawabi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferromagnetic shape memory alloys FSMAs have diverse application, especially in the aerospace and bio-medical industries. They are a class of active and smart materials exhibiting strains under the influence of an applied magnetic field. These magnetic properties are mainly attributed to the martensitic structural phase trans- formation these material experience in response to temperature variation. Co-Ni-Al based alloys are one of the most promising ferromagnetic shape memory alloy FSMA that has been put recently under extensive study by researchers. They have shown extensive and promising features specifically those related to self-actuation. The effect of valence electron concentration and magnetic properties of Co-Ni-Al based ferromagnetic shape memory alloys on the martensitic transformations were analyzed utilizing Ab-initio first principle calculations. The variations of martensite start temperatures (Ms) and magnetic properties of a number of stoichiometric and mnon-stoichiometric Co-Ni-Al ferromagnetic shape memory alloys (FSMA's) with B2 austenite structure were studied and analyzed as a function of composition and lattice site ordering and site preference. A major conclusion of this thesis suggests that the magnetic valence number (Zm) should be considered in conjunction to the e/a ratio if the composition profile of the Ms is to be determined. Both Monte-Carlo and Ab-initio simulations were implemented to obtain the magnetic Heisenberg's exchange coupling parameters (J m) and model the magnetic transformations in stoichiometric Co2NiAl FSMAs. Two different cubic structures, ordered and disordered were compared to their tetragonal distortions martensitic phases and their Curie temperature (TC ) were obtained from the Monte-Carlo magnetic susceptibility temperature profile. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149454
