A Study on the Wall Mobility of Magnetic Domain for the Singel Crystal <TEX>$YFeO_3$</TEX>

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J. Korean Ceram. Soc. > Volume 23(4); 1986 > Article

Journal of the Korean Ceramic Society 1986;23(4): 47.

$YFeO_3$ 박판 단결정의 자벽이동에 관한 연구

김종오, 한관희¹

충남대학교 재료공학과
¹영남대학교 금속공학과

A Study on the Wall Mobility of Magnetic Domain for the Singel Crystal $YFeO_3$

ABSTRACT

Since the wall mobility of bubble magnetic materials havin g the large q (q=Kac/2$pi$$M_s^2$) like a $YFeO_3$ has been found to be proportional to the wall energy theoretically crystallographical direction dependence of wall energy calculated by the basis on the spin configuration of the bubble wall which lies in the ac plane was compared with the crystallographical direction dependence of wall mobility which was measured by the experiment. The sample was a single crystal of $YFeO_3$ which was cut into plate normal to the C axis and polished t a thickness of about 60${mu}{textrm}{m}$ The measurement of the wall mobility was carried out by optical system using the magneto-optic Faraday effect. From the good agreement of the crystallographical direction dependence of wall mobility and will energy it was found that the spin configuration of the bubble wall suggested is fair.