研究了La0.7-xGdxSr0.3MnO3(x=0.00, 0.10, 0.15, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70)体系的M-T曲线、 M-H曲线、 ESR曲线、ρ-T曲线和MR-T曲线. 实验结果表明: 随着Gd掺杂的增加, 体系从长程铁磁有序向自旋团簇玻璃态和反铁磁状态转变, x=0.30和0.40时, 样品在TC以上温区发生相分离; 高掺杂时的输运行为在其磁背景下发生异常, Gd掺杂引起的磁结构的变化将导致CMR效应.
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