Microscopic phase separation and ferromagnetic microdomains in Cr-doped Nd0.5Ca0.5MnO3 -: art. no. 012403
Microscopic phase separation and ferromagnetic microdomains in Cr-doped Nd0.5Ca0.5MnO3 -: art. no. 012403
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DOI：
10.1103/physrevb.67.012403
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发表时间：
2003-01-01
影响因子：
3.7
通讯作者：
Katsufuji, T
中科院分区：
文献类型：
--
作者：
Mori, S;Shoji, R;Katsufuji, T
我们成功地观察到铁磁（FM）微畴的相分离状态发现在Cr掺杂的Nd 0.5Ca 0.5MnO 3的低温洛伦兹显微镜。当y=0.03时，在Nd_（0.5）Ca_（0.5）Mn_（1-y）CryO_3中发现了尺寸为20-30 nm的FM微畴。此外，它清楚地表明，低温相的特点是相分离的状态组成的两个竞争的基态，FM金属态和电荷/轨道有序绝缘体的一个罚款的混合物。我们的实验结果清楚地表明，微观和静态相分离的铬掺杂锰氧化物的发生。
We succeeded in observing ferromagnetic (FM) microdomains in the phase-separated state found in Cr-doped Nd0.5Ca0.5MnO3 by low-temperature Lorentz microscopy. The presence of the FM microdomains with the size of 20-30 nm were found in Nd0.5Ca0.5Mn1-yCryO3 for y=0.03. In addition, it is clearly shown that the low-temperature phase characterized as the phase-separated state consists of a fine mixture of the two competing ground states, the FM metallic state and the charge/orbital ordered insulator one. Our experimental findings clearly demonstrate the occurrence of microscopic and static phase separation in the Cr-doped manganites.