Abstract
The Hall effect of ceramic samples of Pb2Sr2Y1-xCaxCu3O8 has been investigated for 0 ≦ x ≦ 0.5. The Hall coefficient RH is positive and decreases with increasing x, which is explained within the doped Mott-Hubbard model. For x < 0.1, RH increases with decreasing temperature like a conventional semiconductor. For x= 0.1, RH is almost constant. For 0.2 ≦ x ≦ 0.5, where Tc appears, RH increases with decreasing temperature again, and 1/RHe is expressed as αT + β (α > 0, β > 0). The temperature coefficient α increases with increasing Tc. These temperature dependences of RH are common to high-Tc oxides. Effects of the partial substitution of Fe, Co, Ni, Zn, Ga for Cu on Tc have been also studied for x = 0.5. The decrease in Tc is marked in order of Ga, Co, Zn, Ni, Fe. This is discussed in relation to experimental results on YBa2Cu3O7.
Original language | English |
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Pages (from-to) | 1271-1272 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 185-189 |
Issue number | PART 2 |
DOIs | |
Publication status | Published - 1991 Dec 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering