High-temperature phase transition of Tm2Ti2O7

被引：0
作者：
A. V. Shlyakhtina
A. V. Knot’ko
L. L. Larina
S. A. Borichev
L. G. Shcherbakova
机构：
[1] Russian Academy of Sciences,Semenov Institute of Chemical Physics
[2] Moscow State University,Emanuel Institute of Biochemical Physics
[3] Russian Academy of Sciences,undefined
[4] Mendeleev University of Chemical Technology,undefined
来源：
Inorganic Materials | 2004年 / 40卷
关键词：
Grain Size; Phase Transition; Heat Treatment; Inorganic Chemistry; Ionic Conductivity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The high-temperature (>1600°C) order—disorder phase transition of Tm2Ti2O7 is shown to be irreversible. The 740°C ionic conductivity of nanocrystalline Tm2Ti2O7 ceramics synthesized at 1670°C is 2 × 10-3 S/cm and remains unchanged upon heat treatment in air at 860°C for 240 h. The conductivity of the high-temperature (disordered pyrochlore) phase of Tm2Ti2O7 is independent of grain size in the range 20–30 nm.
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页码：1312 / 1316
页数：4
相关论文
共 22 条
[11]  
Shcherbakova L.G.(undefined)O undefined undefined undefined-undefined
[12]  
Knotko A.V.(undefined) (Ln = Lu, Yb, Tm) undefined undefined undefined-undefined
[13]  
Steblevskii A.V.(undefined)Order-Disorder Transformations in Ln undefined undefined undefined-undefined
[14]  
Shlyakhtina A.V.(undefined)Ti undefined undefined undefined-undefined
[15]  
Karyagina O.K.(undefined)O undefined undefined undefined-undefined
[16]  
Shcherbakova L.G.(undefined) (Ln = Lu, Yb, Tm, Gd) undefined undefined undefined-undefined
[17]  
Shlyakhtina A.V.(undefined)Order-Disorder Transition of Ln undefined undefined undefined-undefined
[18]  
Shcherbakova L.G.(undefined)Ti undefined undefined undefined-undefined
[19]  
Knot’ko A.V.(undefined)O undefined undefined undefined-undefined
[20]  
Shlyakhtina A.V.(undefined) (Ln = Lu, Gd) undefined undefined undefined-undefined
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