Superionic phase transition in AgI embedded in molecular sieves

被引：15

作者：

Baryshnikov, S. V. ^{[2
]}

Tien, Cheng ^{[1
,3
]}

Charnaya, E. V. ^{[1
,4
]}

Lee, M. K. ^{[1
]}

Michel, D. ^{[5
]}

Boehlmann, W. ^{[5
]}

Andriyanova, N. P. ^{[2
]}

机构：

[1] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[2] Blagoveschensk State Pedagog Univ, Blagoveshchensk 675002, Russia

[3] Natl Cheng Kung Univ, Ctr Micro Nano Sci & Technol, Tainan 70101, Taiwan

[4] St Petersburg State Univ, Fac Phys, St Petersburg 198504, Petrodvorets, Russia

[5] Univ Leipzig, Fac Phys & Geosci, D-04103 Leipzig, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 02期

关键词：

D O I：

10.1088/0953-8984/20/02/025214

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 [凝聚态物理];

摘要：

Superionic AgI particles embedded in MCM-41 and SBA-15 molecular sieves with different pore sizes were studied using NMR and dielectric methods. The measurements confirmed that the structure of the confined particles did not change noticeably compared to that in bulk AgI. A regular increase in the temperature of the superionic phase transition with decreasing pore size was observed and treated on the basis of the Landau theory of thermodynamic size effects. The maximum increase found upon warming and cooling was about 10 and 8 K, respectively. The ionic conductivity in beta-AgI under confinement was shown to be due to silver mobility on the particle surface.

引用

页数：5

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