Dataset Information

Synthesis of single-phase L1₀-FeNi magnet powder by nitrogen insertion and topotactic extraction.

ABSTRACT: Tetrataenite (L1₀-FeNi) is a promising candidate for use as a permanent magnet free of rare-earth elements because of its favorable properties. In this study, single-phase L1₀-FeNi powder with a high degree of order was synthesized through a new method, nitrogen insertion and topotactic extraction (NITE). In the method, FeNiN, which has the same ordered arrangement as L1₀-FeNi, is formed by nitriding A1-FeNi powder with ammonia gas. Subsequently, FeNiN is denitrided by topotactic reaction to derive single-phase L1₀-FeNi with an order parameter of 0.71. The transformation of disordered-phase FeNi into the L1₀ phase increased the coercive force from 14.5?kA/m to 142?kA/m. The proposed method not only significantly accelerates the development of magnets using L1₀-FeNi but also offers a new synthesis route to obtain ordered alloys in non-equilibrium states.

SUBMITTER: Goto S

PROVIDER: S-EPMC5643398 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Synthesis of single-phase L10-FeNi magnet powder by nitrogen insertion and topotactic extraction.

Goto Sho S Kura Hiroaki H Watanabe Eiji E Hayashi Yasushi Y Yanagihara Hideto H Shimada Yusuke Y Mizuguchi Masaki M Takanashi Koki K Kita Eiji E

Scientific reports 20171016 1

Tetrataenite (L10-FeNi) is a promising candidate for use as a permanent magnet free of rare-earth elements because of its favorable properties. In this study, single-phase L10-FeNi powder with a high degree of order was synthesized through a new method, nitrogen insertion and topotactic extraction (NITE). In the method, FeNiN, which has the same ordered arrangement as L10-FeNi, is formed by nitriding A1-FeNi powder with ammonia gas. Subsequently, FeNiN is denitri ...[more]

PMID: 29038579

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Dataset Information

Synthesis of single-phase L1₀-FeNi magnet powder by nitrogen insertion and topotactic extraction.

Publications

Synthesis of single-phase L1<sub>0</sub>-FeNi magnet powder by nitrogen insertion and topotactic extraction.

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