H+/D+ ISOTOPE EFFECT IN Y-DOPED BACEO3 CRYSTALS

被引：39

作者：

SCHERBAN, T

BAIKOV, YM

SHALKOVA, EK

机构：

[1] COLUMBIA UNIV,HENRY KRUMB SCH MINES,NEW YORK,NY 10027

[2] AR IOFFE PHYSICOTECHN INST,194021 ST PETERSBURG,RUSSIA

来源：

SOLID STATE IONICS | 1993年 / 66卷 / 1-2期

关键词：

D O I：

10.1016/0167-2738(93)90039-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The incorporation and migration of protons in Y-doped BaCeO3 crystals is studied, using room temperature infrared (IR) measurements and electrical conductivity measurements in the temperature range 25-250-degrees-C. The IR spectra of crystals pretreated at high temperature in H2O-saturated gas show two very broad OH bands at 3383 cm-1 and 3035 cm-1. The OH bands are fully replaced by OD bands, at 2503 cm-1 and 2283 cm-1, upon treatment in D2O-saturated gas. The conductivity of the H+-charged sample is two to three times that of the D+-charged sample in the temperature range studied, and the activation energy of the H+-charged sample (0.60 eV) is 0.05 eV lower, suggesting non-classical proton hopping.

引用

页码：159 / 164

页数：6

共 17 条

[1]

BAIKOV YM, 1992, J SOLID STATE CHEM, V96, P224

[2] PROTONIC CONDUCTION IN THE SINGLE-CRYSTALS OF Y-DOPED SRZRO3 [J].