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

作者：Ogawa Daisuke^*; Koike Kunihiro; Mizukami Shigemi; Miyazaki Takamichi; Oogane Mikihiko; Ando Yasuo; Kato Hiroaki

来源：Applied Physics Letters, 2015, 107(10): 102406.

DOI：10.1063/1.4930829

A model sample with an interface of the Nd2Fe14B(100) plane and the alpha-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 x 10(-4) J/m(2), in striking contrast to the positive J(ex) value for the Nd2Fe14B(001)/alpha-Fe(100) interface reported previously.

• 出版日期2015-9-7