Volume 23 “Magnet Systems for Applications in Windpower, Electromotors and Sensors” (2025)

The Volume 23 “Magnet Systems for Applications in Windpower, Electromotors and Sensors” is published in July 2025 as a printed edition and ebook.

ISBN 978-3-932120-55-8; eISBN: 978-3-932120-56-5

Editor: Bernd Grieb; Authors: MSIT^®.
751 pages; 38 chapters.
© Materials Science International Services GmbH, D-70565 Stuttgart (Germany), 2025. 

Table of Contents (pdf)

The volume 23 of the book series Ternary Alloys provides a solid foundation in materials science behind modern permanent magnets, focusing on the constitution and phase relations of the complex ternary and binary systems that define their performance. While permanent magnets are central to many applications from electric motors & wind turbines to sensors, robotics, and medical devices this volume takes a step back from application-driven narratives and instead concentrates on the material fundamentals that make these technologies possible.
The book covers both rare-earth-based and rare-earth-free magnets including groups such as ferrites and AlNiCo and explains how their magnetic properties are directly linked to atomic structure, thermodynamic stability, and phase formation. Special attention is given to how variations in composition and crystal structure affect key parameters like coercivity, remanence, and energy product.
Beside magnet properties other physical and chemical properties like mechanical strength, ductility and corrosion resistance are affected and improvable by variations of compositions. Rare-earth permanent magnets are multiphase materials; therefore, microstructures are relevant for magnetic and chemical performance and their optimizations are understandable and improvable by the metallurgical processing, which is based on thermodynamics and shown in phase diagrams and process schemes.
While historical and geopolitical aspects highlight the importance of rare-earth elements and magnet technology today, this volume is intended as a scientific and technical resource. It is an ideal resource for researchers, engineers, and advanced students seeking to understand the physical and chemical principles that determine magnetic performance and how these principles relate to the materials' real-world use.
The book series Ternary Alloys is the result of an international assessment program performed by MSIT^® - Materials Science International Team since 1984.
The compendium Ternary Alloys and the MSI Eureka^® electronic platform are the most comprehensive sources of reliable data on ternary and binary systems available worldwide.  

The system reports are arranged in the alphabetical order and have a standard format, allowing easy access to the required data. The following information is provided: liquidus projections, isothermal and vertical sections, quasibinary sections, reaction schemes, invariant equilibria, crystallographic data, thermodynamic data and materials properties, accompanied by short descriptive texts and extensive references.

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Starting with the Volume 19, MSI has changed slightly the concept of the handbook series “Ternary Alloys. A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams”. Instead of exploring alphabetically all ternary systems based on one chemical element, like Al-X-Y or Mg-X-Y, the following volumes are dedicated to particular classes of materials or particular application areas, like volume 19 – “Selected Systems for Nuclear Applications”, volume 20 - “Selected Systems for Lead-free Soldering and Brazing Applications”. Selected are ternary systems of importance to industrial alloy development and systems which gained scientific interest in the recent years.

The book series Ternary Alloys provides reliable and comprehensive descriptions of the materials constitution, based on critical intellectual evaluations of all data available at the time and it critically weights the different findings, also with respect to their compatibility with today’s edge binary phase diagrams.

Reliable phase diagrams provide scientists and engineers with basic information of eminent importance for fundamental research and for the development and optimization of materials. So collections of such diagrams are extremely useful, if the data on which they are based have been subjected to critical evaluation, like in these volumes. Critical evaluation means: there where contradictory information is published data and conclusions are being analyzed, broken down to the firm facts and re-interpreted in the light of all present knowledge.

The evaluations are performed by MSIT^®, Materials Science International Team, a group of scientists working together since 1984, being responsible for the publication of more than 65 books on phase diagrams and work related to the study of phase equilibria. Within this team skilled expertise is available for a broad range of methods, materials and applications. This joint competence is employed in the critical evaluation of the often conflicting literature data.

To order books use our online purchase form