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OALib Journal期刊
ISSN: 2333-9721
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la0.5sr0.5mno3薄膜的输运特性和光诱导效应
Keywords: 无机非金属材料,特大磁电阻效应,光诱导
Abstract:
？用磁控溅射方法制备了la0.5sr0.5mno3薄膜,研究了薄膜的输运特性和光诱导效应.la0.5sr0.5mno3薄膜具有温度相变特征:低温为铁磁金属相,高温则为顺磁非导体相,相变温度420k.为铁磁金属相时,光诱导效应导致薄膜的电阻增大,在360k电阻变化相对值的最大值约为9.62%.根据双交换作用模型,激光导致顺磁非导体相小极化子的浓度增加,使电阻减小.
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