IMPROVING THE STABILITY AND MAGNETIC HARDENING OF FE16N2 BY ALLOYING: A FIRST-PRINCIPLES STUDY

IMPROVING THE STABILITY AND MAGNETIC HARDENING OF FE16N2 BY ALLOYING: A FIRST-PRINCIPLES STUDY

2^nd International Conference on MAGNETISM AND MAGNETIC MATERIALS
September 24- 26 , 2018 | Budapest , Hungary

Satadeep Bhattacharjee, Krishnamohan Thekkepat Mahesh Chandran, Pil-Ryung Cha, Jung Hae Choi and Seung-Cheol Lee

Korea Institute of Science and Technology, Republic of Korea KIST School, Korea University of Science and Technology, Republic of Korea Indo-Korea Science and Technology Center, India Kookmin University, Republic of Korea

Scientific Tracks Abstracts : Mater Sci Nanotechnol

Abstract:

Fe16N2, a promising alternative to rare-earth based permanent magnets, has a very limited applicability due to its poor thermal stability. In this work, using density functional theory method, we investigate the e ect of alloying Fe16N2 with 3d and 4d transition group elements on its formation energy and magnetic properties. Using a systematic screening procedure, we propose Vanadium (V) as an excellent alloying element that improves both the stability and magneto-crystalline anisotropy energy (MAE) of Fe16N2. Our work demonstrates that alloying Fe16N2 with V improves its MAE by 20% in addition to making it suitable for high temperature applications. Synergistic improvement in both these performance parameters has not been reported so far. Our work provides useful inputs for experimental e orts to stabilize Fe16N2.

Biography:

Satadeep Bhattacharjee holds a PhD degree in physics and has expertise in the broad area of materials theory. Prior to joining the IKST, he worked in different places such as University of Bonn (Germany), University of Liege (Belgium), Uppsala University (Sweden), RIKEN (Japan) and University of Arkansas in USA. He has authored 20+ research papers in reputed journals. Satadeep has worked in different areas such as electronic structure of low dimensional correlated systems, multiferroics, magnetic multilayers, magnetic molecules, magnetic memory materials etc. His current research interest involves heterogeneous catalysis.

E-mail: satadeep.bhattacharjee@ikst.res.in

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