MnBi Magnetic Material: A Critical Review

Authors

  • Nguyen Van Vuong Institute of Materials Science, Vietnam Academy of Science and Technology 18, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/29/4/14326

Keywords:

MnBi, Low-temperature phase, magnetization, coercivity, energy product, bulk magnets

Abstract

Manganese Bismuth (MnBi) - the ferromagnetic material attracting a great interest of the world magnetic society last years. The absence of rare-earth elements in compositions, the sizable magnetocrystalline anisotropy, the room-temperature moderate but high-temperature reasonable magnetization plus the positive temperature coefficient of coercivity and the moderate Curie temperature make MnBi bulk magnets very potential for high-temperature magnet application. This bright future is a little gray because the research results in the past were not as expected. The paper summarizes the results concerning the MnBi alloys, powders and bulk magnets investigated during past 67 years. The look on the difficulties inhibiting the development of this material is given and the proposals that might allow overcoming the difficulties and push again the efforts of research towards the goal of 12 MGOe for the energy product (BH)max of MnBi bulk magnets are discussed.

Downloads

Download data is not yet available.

Downloads

Published

16-12-2019

How to Cite

Vuong, N. V. (2019). MnBi Magnetic Material: A Critical Review. Communications in Physics, 29(4), 441. https://doi.org/10.15625/0868-3166/29/4/14326

Issue

Section

Papers