Nonstoichiometry and phase transition in NdMnO3
Nonstoichiometry and phase transition in NdMnO3
复制标题
NdMnO3 的非化学计量和相变
DOI：
10.1016/0025-5408(84)90072-2
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发表时间：
1984
影响因子：
5.4
通讯作者：
Y. Miyazaki
中科院分区：
文献类型：
--
作者：
N. Kamegashira;Y. Miyazaki
用重量法研究了1273 K下NdMnO 3相的非化学计量比.氧分压通过使用流动的O2 Ar或H2 CO2混合物来控制。发现了NdMnO 3+ x在1273 K和不同氧分压下的超化学计量相的存在及其均匀性范围（x= 0 ~ 0.065）。通过电导率和差热分析研究了氧的非化学计量比对高温相变的影响。转变温度随氧含量的增加而降低。
The nonstoichiometry of neodymium manganite NdMnO 3 phase has been studied by a gravimetric method at 1273 K. The oxygen partial pressures were controlled by using flowing O 2 Ar or H 2 CO 2 mixtures. The existence of hyperstoichiometric phase and the homogeneity range of the phase NdMnO 3+ x from x= 0 to 0.065 at 1273 K under various oxygen partial pressures has been revealed. And also the effect of oxygen nonstoichiometry on the phase transition at high temperature has been studied by electrical conductivity and DTA measurements. The transition temperature decreases with increasing oxygen content.