INSITU STUDY OF THE DEFECT STRUCTURE OF WUSTITE FE1-XO BY DIFFUSE ELASTIC NEUTRON-SCATTERING

被引：13
|
作者：
SCHWEIKA, W [1 ]
HOSER, A [1 ]
MARTIN, M [1 ]
机构：
[1] UNIV HANNOVER,INST PHYS CHEM & ELEKTROCHEM,W-3000 HANNOVER,GERMANY
来源：
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1992年 / 96卷 / 11期
关键词：
CLUSTERS; DIFFUSE NEUTRON SCATTERING; NONSTOICHIOMETRY; POINT DEFECT STRUCTURE; TRANSITION METAL OXIDES;
D O I：
10.1002/bbpc.19920961105
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：
In-situ diffuse neutron scattering experiments were carried out to investigate the defect structure of wustite Fe1-xO. The data were collected at various temperatures from room temperature to 1150-degrees-C and at deviations from stoichiometry, x, from 0.05 to 0. 13. Diffuse peaks were found at Q = 2pi/a (1.66, 0, 0) and Q = 2pi/a (0.83, 0.83, 0.83). Within the stability field of wustite the intensity of these diffuse maxima scales with the defect concentration. Neither the 13:4 defect clusters proposed from earlier X-ray experiments, nor a simple vacancy defect with a spherical displacement field (as found in Mn1-xO) are compatible with our observations.
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收藏
页码：1541 / 1544
页数：4
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