Hall coefficient and oxygen stoichiometry in YBa2Cu3O7- delta ceramics at elevated temperatures.
Hall coefficient and oxygen stoichiometry in YBa2Cu3O7- delta ceramics at elevated temperatures.
复制标题
YBa2Cu3O7-δ陶瓷在高温下的霍尔系数和氧化学计量。
DOI：
10.1103/physrevb.38.844
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Fiory
中科院分区：
文献类型：
--
作者：
Grader;Gallagher;Fiory
The Hall coefficient and resistivity of polycrystalline ceramic samples of YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ were measured at elevated temperatures and at various ambient O/sub 2/ partial pressures and correlated with separate thermogravimetric measurements of delta. In the region where the oxygen stoichiometry reaches equilibrium with the external O/sub 2/, it is shown by isothermal plots that the Hall number density decays exponentially with increasing delta and the effective Hall mobility is weakly dependent on delta. Although transport coefficients are temperature dependent, this result lends support to the picture that oxygen doping in the cuprate acts mainly to modulate the density of hole carriers.
