Structural, transport, and magnetic properties of PrBa{sub 2{minus}x}Sr{sub x}Cu{sub 3}O{sub 7{minus}{delta}}
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, Tsinghua University, Beijing 100084 (China)
- Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)
Structural, electrical transport, and magnetic properties of polycrystalline samples of PrBa{sub 2{minus}x}Sr{sub x}Cu{sub 3}O{sub 7{minus}{delta}} were investigated. The solid solubility limit for Sr in PrBa{sub 2{minus}x}Sr{sub x}Cu{sub 3}O{sub 7{minus}{delta}} was found to be about 0.8 and the orthorhombic-to-tetragonal phase transition occurred at x=0.2. With Sr doping, the electrical resistivity reduced abruptly, especially at low temperatures. For the x=0 sample, {rho}(20thinspK)/{rho}(300thinspK){approximately}10{sup 4}, for the x=0.8 sample, {rho}(20thinspK)/{rho}(300thinspK){approximately}100, while for x=1, {rho}(20thinspK)/{rho}(300thinspK){approximately}3. In contrast to the aforementioned change, the antiferromagnetic ordering temperature T{sub N} and the effective magnetic moment of Pr ions showed no obvious change indicating their insensitivity to Sr doping. The results are discussed considering the Sr doping induced variation of hybridization between Pr ions and O{sub 2p} of the CuO{sub 2} planes. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 632650
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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