Magnetostrictive Behavior of Antiferromagnetic CoO Single Crystal in Magnetic Field
Magnetostrictive Behavior of Antiferromagnetic CoO Single Crystal in Magnetic Field
复制标题
反铁磁CoO单晶在磁场中的磁致伸缩行为
DOI：
10.1143/jpsj.20.720
复制
发表时间：
1965
期刊：
影响因子：
--
通讯作者：
T. Nakamichi
中科院分区：
文献类型：
--
作者：
T. Nakamichi
在高达11 KOe的磁场下，沿沿着三个主晶向测量了CoO单晶的磁致伸缩。磁致伸缩出现在尼尔温度以下10度。在液态空气温度下观测到的磁致伸缩强烈地依赖于外加磁场，可以用λ=[ a + B cos 2（φ-φ 0）] H2的形式来描述，其中H和φ分别是磁场的强度和方向，a，B和φ 0是与磁场无关的常数。结合反铁磁CoO单晶的磁化过程对结果进行了简要讨论，并提出反铁磁畴壁的位移在外加磁场引起的磁致伸缩中起着最重要的作用。
The magnetostriction of CoO single crystals were measured along three principal crystallographic directions in fields up to 11 KOe. The magnetostriction appears from ten degrees below the Neel temperature. The magnetostriction observed at liquid air temperature is strongly dependent on an applied field and can be described in the form of λ=[ a + b cos 2(φ-φ 0 )] H 2 , where H and φ are the intensity and direction of the field, respectively, and a , b , and φ 0 are constants independent of the field. The result is briefly discussed in connection with the magnetization process occurring in antiferromagnetic CoO single crystal and it is suggested that the displacement of antiferromagnetic domain walls plays the most important role in the magnetostriction induced by an applied field.