RESISTIVITY AND THERMOELECTRIC-POWER MEASUREMENTS OF PRXY1-XBA2CU3O7-DELTA UP TO 1200-K AND AN ELECTRONIC-STRUCTURE ANALYSIS

被引：46

作者：

FISHER, B ^{[1
]}

GENOSSAR, J ^{[1
]}

PATLAGAN, L ^{[1
]}

ASHKENAZI, J ^{[1
]}

机构：

[1] UNIV MIAMI,DEPT PHYS,CORAL GABLES,FL 33156

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.43.2821

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of absolute thermoelectric power and resistivity in Pr(x)Y(1-x)Ba2Cu3O7-delta, as function of x and delta, over a wide temperature range. At high temperature, the substitution of Pr for Y does not affect the thermopower and resistivity; Pr behaves then as a trivalent ion: Pr3+. For small x and delta the effects of substitution of Y by Pr and of oxygen deficiency on the low-temperature resistivity are additive. A simple electronic-structure model is proposed to account for thermopower as function of temperature, x, and delta.

引用

页码：2821 / 2827

页数：7

共 23 条

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