Hall coefficient of vanadium carbide as a function of temperature and carbon concentration
作者:
L. W. Shacklette,
H. Ashworth,
期刊:
Journal of Applied Physics
(AIP Available online 1973)
卷期:
Volume 44,
issue 12
页码: 5254-5258
ISSN:0021-8979
年代: 1973
DOI:10.1063/1.1662139
出版商: AIP
数据来源: AIP
摘要:
The Hall coefficientRof single crystals of vanadium carbide (VCx) with carbon‐to‐metal ratios (x) ranging from 0.83 to 0.88 were measured between 4.2 and 300 K. The behavior ofRversusTis found to depend critically onx, as well as the type of ordered structure (V8C7or V6C5) present. The data are interpreted in terms of a two‐band model which allows for the effects of anisotropic scattering. It is proposed that a minimum inR (x)atx= 0.875 (V8C7) results from an increase in relaxation time, rather than a change in band structure for the ordered compound. The two‐band analysis is consistent with the specific heat data of Lowndes, Finegold, and Lye which show a maximum in the density near the ordered compound V6C5.
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