Raman-active phonons and Nd3+ crystal-field studies of weakly doped Nd1-xSrxMnO3 -: art. no. 024423

被引：3
作者：
Jandl, S
Mukhin, AA
Ivanov, VY
Nekvasil, V
Sadowski, ML
机构：
[1] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada
[2] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[3] Acad Sci Czech Republ, Inst Phys, CZ-16253 Prague, Czech Republic
[4] Grenoble High Magnet Field Lab, F-38042 Grenoble, France
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.72.024423
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Raman-active phonons as a function of temperature and Nd3+ infrared active crystal-field excitations under high magnetic fields have been studied in Nd0.975Sr0.025MnO3 and Nd0.9Sr0.1MnO3 and compared to NdMnO3 results. While long range antiferromagnetism disappears in Nd0.9Sr0.1MnO3, low energy phonon softening and phase separation in domains develop as a result of doping. Calculation of g tensors indicates that additional crystal-field excitations observed in Nd0.975Sr0.025MnO3 and Nd0.9Sr0.1MnO3 are due to x-y twinning.
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页数：7
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