Magnetic Materials Committee

Technical Programming

2018 TMS Annual Meeting & Exhibition: Advanced Magnetic Materials for Energy and Power Conversion Applications: Organized by Orlando Rios; Francis Johnson; Paul Ohodnicki; Alex Leary; Ian Ashcroft

The accelerated expansion of global energy demands within the recent decade may be interpreted as an indicator of quality of life and the environment. Energy technologies hinge on efficient conversion and power densification. Engineering materials, some of which are subject to supply risks, price volatility, or concerns about long-term availability has been shown to have significant impacts on viability, reliability, and efficiency of power conversion. This symposium focuses on structure, property, processing, and performance interrelationships for emerging soft and hard magnetic materials systems as well as hybrid systems such as combined magnetocaloric and elastocaloric materials which are relevant for energy and power conversion applications. A special focus of this symposium will be targeted at advanced manufacturing approaches and the interface of engineered materials with device level performance and applications which rely on the fundamental magnetic interactions between structure and electromagnetic energy. We encourage topics that focus on the economically effects that critical materials have on manufacturing and adaptation of technologies and applications. The symposium will place a particular interest on emerging and established advanced manufacturing methods such as: 1. additive manufacturing, 2. top-down and bottom up bulk nano-manufacturing, 3. thermal-mechanical and thermal magnetic processing, and 4. energy dense processing such as RF, microwave, high pressure and high magnetic field processing.

2017 TMS Annual Meeting & Exhibition: Materials Engineering of Soft Magnets for Power and Energy Applications: Organized by Paul Ohodnicki; Francis Johnson; Alex Leary; Tanjore Jayaraman; Lajos Varga

A number of societal trends are driving the need for advanced soft magnetic alloys and ceramic materials for emerging energy and power applications. For example, modernization of an aging transmission and distribution system to allow for increased penetration of renewables while retaining or improving resiliency, reliability, and efficiency will require advances in power electronics converters, power flow controllers and sensors, and grid asset monitoring sensors. Similarly, a trend towards electrification of the transportation fleet spanning automotive, aerospace, aviation, and nautical industries is placing increasing demands on higher power density and, in some cases, higher operational temperature power electronics converters. In the case of rotating electrical machinery such as industrial motors and wind generators, reduced energy intensity and CO2 emissions combined with an increased power density are obtainable but require an increase in the rotational speeds and/or broader deployment of variable frequency drives. To address the technical requirements imposed by emerging needs, improved soft magnets and an improved understanding of their fundamental magnetization processes under application relevant conditions as a function of structure, property, and processing will be required. This symposium will focus on applied physics and materials engineering principles of metallic and ceramic soft magnets relevant to emerging energy and power applications. Structure, processing, and performance interrelationships will be explored in the context of emerging end-use application needs. In particular, an emphasis will be placed on the development of new insights into the impacts of structure and processing on detailed magnetization processes of metallic and ceramic soft magnets under application relevant conditions.

2017 TMS Annual Meeting & Exhibition: Materials Science for High-Performance Permanent Magnets: Organized by Satoshi Hirosawa; Matthew Kramer; Oliver Gutfleisch; Hae-Woong Kwon

High-performance permanent magnets are indispensable in realizing energy-efficient electric-mechanical energy conversion devices such as motors and generators. Since the hard magnetism appears with complex multi-phase microstructure, academic activities in this frontier will proceed with strong corporations between computational and characterization studies. The symposium will solicit experimental, theoretical, and computational investigations from academia, national laboratories and industry on next generation hard magnetic materials including improvement of neodymium iron borides permanent magnets, other rare earth compounds, the industrial viability of nanocomposite magnets, and the potential of rare earth free permanent magnets. Topics: 1) New hard magnetic materials 2) Dy-free Nd-Fe-B permanent magnets 3) Light rare earth-based new hard magnetic compounds 4) Microstructural characterization and magnetic analysis of novel hard magnetic materials 5) First-principles materials search for new permanent magnets 6) Numerical simulation of hard magnetic properties 7) Coercivity theory and magnetization reversal processes 8) Thermodynamics assessment of permanent magnet materials

2016 TMS Annual Meeting & Exhibition: Advanced Magnetic Materials: An FMD Symposium in Honor of Michael E. McHenry: Organized by Raju Ramanujan; Matthew Willard; Francis Johnson; Paul Ohodnicki

This symposium in honor of Prof. Michael E. McHenry will discuss recent developments in the processing, characterization, property evaluation and product development of advanced magnetic materials. The contributions of Prof. McHenry will be highlighted; the current status and recent advances in relevant research areas will be discussed. Areas of interest include magnetic materials for energy, bio, transducer and lab-on-a-chip applications. These applications encompass a wide variety of high value added industries and technologies. Examples include improved soft magnetic materials for reducing energy loss in electrical systems, hard magnets for energy efficient electrical machines, magnetocaloric materials for novel thermal management and magnetic nanoparticles for magnetocaloric, bioengineering and lab-on-a-chip microfluidic systems. The relevant materials include soft and hard magnets, magnetocaloric materials, nanoparticles and magnetic fluids. Emphasis will be placed on the processing of nanostructured magnetic materials by both physical and chemical techniques, synthesis of nanoparticles, characterization by microscopy and diffraction techniques and performance evaluation using specialized magnetometry techniques. Product development of advanced magnetic materials for large scale systems and small scale devices is also included in the scope of this symposium.

2015 TMS Annual Meeting & Exhibition: Advanced Materials for Power Electronics, Power Conditioning, and Power Conversion III: Organized by Paul Ohodnicki; Michael Lanagan; Michael McHenry; Rachael Myers-Ward; Clive Randall; Matthew Willard; Ty McNutt

Independent of the means by which electrical power is generated (conventional fossil, advanced fossil, nuclear, solar, wind, etc.), power conditioning and conversion is required to transform power into an appropriate form for efficient and cost-effective integration into the grid. By 2030, it is also projected that 80% of all electricity will flow through power electronics. Advanced materials including soft magnetic materials, semiconductors, and dielectric materials for capacitors are crucial for enabling the next generation of advanced power electronics technologies. These technical communities have historically worked independent of one another and materials development efforts have often been carried out in the absence of frequent and meaningful interactions with the power electronics community. The proposed symposium aims to bridge these historical gaps through a number of technical symposia devoted to relevant materials systems including soft magnets, dielectric materials for capacitors, and semiconductor materials. The primary focus of the proposed symposium will be in the area of advanced materials for power electronics and power conditioning systems. A range of invited and contributed talks will be presented by the top materials scientists in each field. To supplement the traditional technical sessions, a selected group of technical experts from the power electronics community will also be invited to present and to engage the materials community. These invited talks are intended to promote interactions between the materials and power electronics communities, to educate the materials community about critical materials needs, and to educate the power electronics community about state-of-the-art material developments.

2015 TMS Annual Meeting & Exhibition: Magnetic Materials for Energy Applications V: Organized by Francis Johnson; Raju Ramanujan; Paul Ohodnicki

This symposium will discuss recent developments in the processing, characterization, property evaluation and product development of magnetic materials for energy applications. The relevant materials include permanent magnets, soft magnetic materials, magnetocaloric materials, and magnetic nanomaterials. Magnetic materials and components with improved properties will enhance energy security and reduce greenhouse gas emissions by increasing the efficiency of power generation, distribution, storage, and conversion systems. Advanced electric machines and drives, with either permanent magnet or induction architectures, are being developed to operate at continually higher speeds and temperatures. In addition to excellent magnetic properties, these rotating machines place demands on the mechanical and thermal properties of the magnetic materials used in their construction. For electric vehicles, motors and wind power generators, the magnetic materials must retain their properties up to elevated temperatures. Advanced soft magnetic materials are required to enhance the performance of electrical power systems; high power density and high system efficiency demand soft magnetic materials which exhibit low power loss at high frequencies. High efficiency magnetic refrigeration technology relies on the application of both magnetocaloric materials and the use of permanent magnets to drive the refrigeration cycle. Magnetic nanomaterials, e.g., magnetic nanoparticles, can exhibit superior magnetic properties compared to their bulk counterparts.