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首页> 外文期刊>Physica, B. Condensed Matter >Magnetic inhomogeneities in electron-doped manganites Sr _(1-x)Ce _xMnO _3 (0.10 ≤ x ≤ 0.30)
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Magnetic inhomogeneities in electron-doped manganites Sr _(1-x)Ce _xMnO _3 (0.10 ≤ x ≤ 0.30)

机译:电子掺杂锰铁中的磁不均匀性Sr _(1-x)Ce _xMnO _3(0.10≤x≤0.30)

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摘要

We report the structural, electrical, and magnetic properties of electron-doped manganites Sr _(1-x)Ce _xMnO _3 (0.10≤x≤0.30). The partial substitution of Ce for Sr stabilizes the perovskite-type structure with a tetragonal distortion. The samples exhibit an insulating behavior, except for the x=0.10 sample with a semimetalinsulator transition. The antiferromagnetic ground state is suppressed by the Ce-doping and a cluster-glass-like state appears at low temperatures as x≥0.20, originating from the competition of antiferromagnetic and ferromagnetic correlations. Moreover, the short-range ferromagnetic order has also been observed in the paramagnetic range. Our results approve the existence of intrinsic magnetic inhomogeneities in Sr _(1-x)Ce _xMnO _3 system.
机译:我们报告了电子掺杂的锰铁矿Sr _(1-x)Ce _xMnO _3(0.10≤x≤0.30)的结构,电气和磁性。用Ce代替Sr可稳定钙钛矿型结构,并具有四方畸变。样品表现出绝缘性能,除了x = 0.10的样品具有半金属绝缘体转变。通过Ce掺杂抑制了反铁磁基态,并且由于反铁磁和铁磁相关性的竞争,在低温下,x≥0.20时出现了类玻璃态。此外,在顺磁范围内也观察到了短距离铁磁阶。我们的结果批准了Sr _(1-x)Ce _xMnO _3系统中固有的磁不均匀性的存在。

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