Negative exchange coupling in Nd2Fe14B(100)/ α -Fe interface

Daisuke Ogawa; Kunihiro Koike; Shigemi Mizukami; Takamichi Miyazaki; Mikihiko Oogane; Yasuo Ando; Hiroaki Kato

doi:10.1063/1.4930829

Negative exchange coupling in Nd₂Fe₁₄B(100)/ α -Fe interface

Daisuke Ogawa, Kunihiro Koike, Shigemi Mizukami, Takamichi Miyazaki, Mikihiko Oogane, Yasuo Ando, Hiroaki Kato

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

A model sample with an interface of the Nd₂Fe₁₄B(100) plane and the α-Fe phase was fabricated in order to evaluate the exchange-coupling constant J_ex between these two ferromagnetic phases. By measuring the ferromagnetic resonance fields and the Kerr loops, the J_ex was confirmed to be negative with the value of J_ex=-6.5×10^-4 J/m², in striking contrast to the positive J_ex value for the Nd₂Fe₁₄B(001)/α-Fe(100) interface reported previously.

Original language	English
Article number	102406
Journal	Applied Physics Letters
Volume	107
Issue number	10
DOIs	https://doi.org/10.1063/1.4930829
Publication status	Published - 2015 Sept 7

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4930829

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title = "Negative exchange coupling in Nd2Fe14B(100)/ α -Fe interface",

abstract = "A model sample with an interface of the Nd2Fe14B(100) plane and the α-Fe phase was fabricated in order to evaluate the exchange-coupling constant Jex between these two ferromagnetic phases. By measuring the ferromagnetic resonance fields and the Kerr loops, the Jex was confirmed to be negative with the value of Jex=-6.5×10-4 J/m2, in striking contrast to the positive Jex value for the Nd2Fe14B(001)/α-Fe(100) interface reported previously.",

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AU - Ogawa, Daisuke

AU - Koike, Kunihiro

AU - Mizukami, Shigemi

AU - Miyazaki, Takamichi

AU - Oogane, Mikihiko

AU - Ando, Yasuo

AU - Kato, Hiroaki

PY - 2015/9/7

Y1 - 2015/9/7

N2 - A model sample with an interface of the Nd2Fe14B(100) plane and the α-Fe phase was fabricated in order to evaluate the exchange-coupling constant Jex between these two ferromagnetic phases. By measuring the ferromagnetic resonance fields and the Kerr loops, the Jex was confirmed to be negative with the value of Jex=-6.5×10-4 J/m2, in striking contrast to the positive Jex value for the Nd2Fe14B(001)/α-Fe(100) interface reported previously.

AB - A model sample with an interface of the Nd2Fe14B(100) plane and the α-Fe phase was fabricated in order to evaluate the exchange-coupling constant Jex between these two ferromagnetic phases. By measuring the ferromagnetic resonance fields and the Kerr loops, the Jex was confirmed to be negative with the value of Jex=-6.5×10-4 J/m2, in striking contrast to the positive Jex value for the Nd2Fe14B(001)/α-Fe(100) interface reported previously.

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Negative exchange coupling in Nd₂Fe₁₄B(100)/ α -Fe interface

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