Abstract： A phenomenological expression of the metal-insulator transition temperature is proposed for AMnO3 manganese perovskites by taking into account the distortion of Mn-O-Mn bond due to A-cation size and the strain-dependent effect due to performed Jahn-Teller distortions, independently. Using reasonable physical parameters, the calculated results give excellent agreement with experimental data obtained in polycrystalline samples of La2/3(Ca1-xBax)1/3MnO3, providing a strong support to this approach.
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
引用本文:
YUAN Song-Liu;LIU Jie;XIA Zheng-Cai;PENG Gang;TANG Jie;ZHANG Guo-Hong;ZHANG Li-Jiang;FENG Wen;LI Zhong-Yi;YANG Ying-Ping;LIU Li;XIONG Cao-Shui. Correction to the Metal-Insulator Transition Temperature due to
Cation Size and Strain Effects for Colossal Magnetoresistance
Perovskites[J]. 中国物理快报, 2002, 19(11): 1675-1678.
YUAN Song-Liu, LIU Jie, XIA Zheng-Cai, PENG Gang, TANG Jie, ZHANG Guo-Hong, ZHANG Li-Jiang, FENG Wen, LI Zhong-Yi, YANG Ying-Ping, LIU Li, XIONG Cao-Shui. Correction to the Metal-Insulator Transition Temperature due to
Cation Size and Strain Effects for Colossal Magnetoresistance
Perovskites. Chin. Phys. Lett., 2002, 19(11): 1675-1678.
2002, Vol. 19 
