High field ESR of Kagome antiferromagnets SrCrxGa12-xO19
High field ESR of Kagome antiferromagnets SrCrxGa12-xO19
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Kagome 反铁磁体 SrCrxGa12-xO19 的高场 ESR
DOI：
10.1143/jpsj.65.848
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发表时间：
1996
影响因子：
1.7
通讯作者：
H. Nagasawa
中科院分区：
文献类型：
--
作者：
H. Ohta;M. Sumikawa;M. Motokawa;H. Kikuchi;H. Nagasawa
在1.8~265K温度范围内观察到Kagome反铁磁体SrCrxGa12-xO19的高场ESR，在x=0.6~x=8.78范围内观察到浓度依赖关系，所有样品的共振场随温度降低而减小，线宽随温度降低而变宽。由于低温下的线宽很宽，例如4.2K下的线宽约为7T，因此高频测量是必要的。结合其他测量所观察到的系统的特殊磁行为，对结果进行了讨论。
High field ESR of Kagome antiferromagnets SrCr x Ga 12- x O 19 have been observed in the submillimeter wave region from 1.8 K to 265 K. The concentration dependence was observed from x =0.6 to x =8.78, and all samples showed the decrease of the resonance field and broadening of linewidth as the temperature was decreased. As the linewidth is very broad at low temperature, for instance about 7 T at 4.2 K, the measurement using high frequency was essential. The results are discussed in connection with the peculiar magnetic behaviors of the system observed by other measurements.