Micromagnetism of advanced hard magnetic materials
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Helmut Kronmüller
Abstract
The continuum theory of micromagnetism has been found to be a rather effective tool to describe magnetic states and magnetization processes. In this paper some rigorous micromagnetic results obtained for characteristic magnetic properties of nanocrystalline hard magnetic materials will be outlined and their application to the development of outstanding magnetic materials will be discussed. In particular the role of exchange coupled composite systems will be considered and the effects of the microstructure will be investigated. Furthermore, the deteriorating effects of magnetically softened surface regions, the depinning and pinning of domain walls at phase boundaries, the remanence exchange enhancing effects and the depinning fields of domain walls of composite particles in the case of high-density recording systems will be discussed.
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© 2009, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Feature
- Nd–Fe–B permanent magnets a quarter century later: implications for patentability
- Micromagnetism of advanced hard magnetic materials
- Magnetism of nanostructured materials for advanced magnetic recording
- Basic
- A Study of the Al–Mg–B Ternary Phase Diagram
- Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits
- Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
- Melting Behavior of Sn–Bi Alloy Powder Compacts Observed Using Optical Dilatometry
- High-Strength Mg-Based Bulk Metallic Glass Composites with Remarkable Plasticity
- Determination of Liquidus Temperature in Sn–Ti–Zr Alloys by Viscosity, Electrical Conductivity and XRD Measurements
- The coupled FEM analysis of super-high angular speed polishing of diamond films
- Applied
- Comparison of Depth-Sensing Indentation at Ultramicroscopic Contacts by Single- and Multiple-Partial-Unload Cycles
- Sintering Behavior of ZnO: Mn Ceramics Fabricated from Sol-Gel Derived Nanocrystalline powders
- Suitability of Maraging Steel Weld Cladding for Repair of Die-Casting Tooling
- Enhanced properties of functionally graded Cu–Cr powder compacts
- Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys
- Notifications
- DGM News
Articles in the same Issue
- Contents
- Contents
- Feature
- Nd–Fe–B permanent magnets a quarter century later: implications for patentability
- Micromagnetism of advanced hard magnetic materials
- Magnetism of nanostructured materials for advanced magnetic recording
- Basic
- A Study of the Al–Mg–B Ternary Phase Diagram
- Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits
- Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
- Melting Behavior of Sn–Bi Alloy Powder Compacts Observed Using Optical Dilatometry
- High-Strength Mg-Based Bulk Metallic Glass Composites with Remarkable Plasticity
- Determination of Liquidus Temperature in Sn–Ti–Zr Alloys by Viscosity, Electrical Conductivity and XRD Measurements
- The coupled FEM analysis of super-high angular speed polishing of diamond films
- Applied
- Comparison of Depth-Sensing Indentation at Ultramicroscopic Contacts by Single- and Multiple-Partial-Unload Cycles
- Sintering Behavior of ZnO: Mn Ceramics Fabricated from Sol-Gel Derived Nanocrystalline powders
- Suitability of Maraging Steel Weld Cladding for Repair of Die-Casting Tooling
- Enhanced properties of functionally graded Cu–Cr powder compacts
- Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys
- Notifications
- DGM News