Mossbauer observation of the quantum levels of Fe3+ ions doped in 1D Ising ferromagnet Ca3CO2O6

被引：42
|
作者：
Kageyama, H [1 ]
Kawasaki, S [1 ]
Mibu, K [1 ]
Takano, M [1 ]
Yoshimura, K [1 ]
Kosuge, K [1 ]
机构：
[1] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.79.3258
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have measured the Mossbauer effect of Fe-57(3+) (S = 5/2) ions doped in a 1D Ising ferromagnet Ca3Co2O6. The spectra with hyperfine fields corresponding to the exchange polarized Fe electron spins with m(z) = +/-5/2, +/-3/2, +/-1/2 are first observed in the magnetically dense system for T less than or equal to 20 K, suggesting slow magnetic relaxation at the Fe3+ sites. The key lies in the large difference between magnetic characters of the host (Ising) and impurity (Heisenberg) spins, making the impurity spins extremely isolated in the host 1D Ising spin system.
引用
收藏
页码：3258 / 3261
页数：4
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