11.07.2015 Views

E - 磁学国家重点实验室 - 中国科学院物理研究所

E - 磁学国家重点实验室 - 中国科学院物理研究所

E - 磁学国家重点实验室 - 中国科学院物理研究所

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Precise determination of A 20 via MSA20=4π∆(Fe3+)5 η2eQ(1+ )1/ 23∆(Fe3+)EJT=< r2>23dη7Q(1+ )1/ 23Relative transmissionRelative transmissionLa 0.69Ca 0.31Mn 0.91Fe 0.09O 3La 0.61Ca 0.39Mn 0.91Fe 0.09O 3-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0Relative velocity(mm/sec)∆(Fe 3+ ) (mm/s)0.500.400.300.200.10x=0.31x=0.501.751.401.050.700.350.000.00100 150 200 250 300T(K)Z.H. Cheng, PRL Fig. 4E JT (ev)

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