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Ordering and Dynamic Properties with Respect to the Arrangement of Excess Oxygen Atoms in Layered Perovskite Oxide Crystals

机译:关于层状钙钛矿氧化物晶体中过量氧原子排列的有序性和动力学性质

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摘要

Thermal properties of layered perovskite oxide crystals, La_n+1 Ni_nO_3n+1+δ(n=1,2) and La_2CuO_4+δ, found by using an adiabatic calorimeter are explained. The characters of the ordering In the arrangement of excess oxygen atoms and its relation to the tilt of Bo_6 (B:Ni,Cu) octahedra are discussed in combination with the results of neutron diffraction studies. The characters observed of glass transition phenomena are discussed with proposition of a relaxation time expression for the rearrangement motion of excess oxygen atoms.
机译:解释了使用绝热量热仪发现的层状钙钛矿氧化物晶体La_n + 1 Ni_nO_3n + 1 +δ(n = 1,2)和La_2CuO_4 +δ的热学性质。结合中子衍射研究结果,讨论了过量氧原子的排列顺序及其与Bo_6(B:Ni,Cu)八面体的倾斜的关系。讨论了观察到的玻璃化转变现象的特征,并提出了多余氧原子的重排运动的弛豫时间表达式。

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