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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Materials Engineering of Soft Magnets for Power and Energy Applications
Presentation Title Unique Magnetostriction of Fe68.8Pd31.2 Attributable to De-twinning Mechanism
Author(s) Jake Steiner, Abdellah Lisfi, Tomoyoki Kakeshita, Takashi Fukuda, Manfred Wuttig
On-Site Speaker (Planned) Jake Steiner
Abstract Scope Fe68.8Pd31.2 exhibits an anomalously large magnetostriction of 400 ppm at room temperature as well as linear, isotropic, and hysteresis free magnetization behavior. This near perfectly reversible magnetic response is attributable to the presence of a large number of premartensitic twins present in the system made possible through the elastic softening that occurs near a martensitic transformation temperature of 250 K. It is proposed that the twins in the material reduce both elastic and magnetic self energy, causing the elastic and magnetic behavior of the material to be intimately linked. In such a framework, the anisotropy energy becomes extremely low causing the material to bear no crystalline dependence on magnetization, and application of a magnetic field causes simultaneous magnetic and twin domain movement, which, upon removal of the field, relaxes the system.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Advanced Magnetic Polymer Nanocomposites for High Frequency Device Applications
Advanced Magneto-Optical Domain Analysis in Soft Magnetic Materials
Advanced Soft Magnetic Materials for Highly-efficient Electric Motors
Candidate Coatings for Soft Magnet Composites: Insights Gained from Multiscale Electron Microscopy
Challenges to the Commercial Acceptance of Amorphous and Nanocrystalline Soft Magnetic Materials
Combinatorial High-throughput Discovery of Magnetic Materials in Thin Films
Consolidation and Behavior of Bulk Iron Nitride Soft Magnets via Spark Plasma Sintering
Consolidation of Bulk Ferrimagnetic Rare Earth Iron Garnets
Crystallization Products and Strain Annealing Effects in (FexNi1-x)80Nb4Si2B14 Metal Amorphous Nanocomposites (MANCs)
Development of Fe-based Bulk Metallic Glasses with Both High Saturation Flux Density and High Glass Forming Ability
Development of Mold Inductor for Power Conversion System
Direct Measurement of the Magnetocaloric Effect in NiMnIn Ribbons
Effect of Annealing Time on the Texture of a 2.8% Si Non-Oriented Electrical Steel after Inclined and Skew Rolling
Effects of Cooling Rate on 6.5% Silicon Steel Ordering
Ferrite-coated Fe Soft Magnetic Composites: Balance of Magnetic Permeability and Electrical Resistivity
Large Magnetocaloric Effect in Ga Substituted NiMnIn Metamagnetic Shape Memory Alloys
Magnetic Material Excited by Power Electronics in Electrical Engineering
Magnetic Properties of Shear-textured Fe-Si Sheet Produced by Simple Shear Deformation
Multi-parameter Magnetic Material Characterization for High Power Medium Frequency Converters
Nanocomposite Soft Magnetic Materials for High Frequency and High Power Conversion Applications
Novel Silicon Steel Nanocomposites via Severe Shear Deformation Approaches
Opportunities and Challenges in the Additive Manufacture of Soft Magnetic Silicon Steel Parts: Processing, Material Properties and Component Design
Structure-Processing-Property Relationships in High Temperature Nanocomposite Soft Magnets
Study of Temperature Dependent Magnetic Properties of Zr+4 and Ti+4 Substituted Cobalt Ferrites
Unique Magnetostriction of Fe68.8Pd31.2 Attributable to De-twinning Mechanism

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