Magnetism and superconductivity in 3d-metal-substituted Bi-based cuprates having the 2:2:0:1 structure.
Magnetism and superconductivity in 3d-metal-substituted Bi-based cuprates having the 2:2:0:1 structure.
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具有 2:2:0:1 结构的 3d 金属取代的 Bi 基铜酸盐的磁性和超导性。
DOI：
10.1103/physrevb.43.5481
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
McKinnon
中科院分区：
文献类型：
--
作者：
Remschnig;Tarascon;Miceli;Hull;McKinnon
用磁性（Ni）或非磁性（Zn） 3{ital d}金属取代Cu或Mn对超导化合物Bi{sub 1.2}Pb{sub 0.8}La{sub 0.5}Sr{sub 1.5}CuO{sub 6+{ital y}}和反铁磁绝缘相Bi{sub 2}Sr{sub 2}MnO{sub 6+{ital y}}和BiPbSr{sub 2}MnO{sub 6}的物理性质的影响，这些都是与10-K超导相Bi{sub 2}Sr{sub 2}CuO{sub {ital z}}（2:2:0:1）同构的。用x射线粉末衍射、磁化率和电阻率测量进行了研究。我们发现，Ni和Zn取代Cu和Mn，其溶解度范围强烈依赖于掺杂剂和主体化合物的性质。例如，在cu基化合物中，溶解度范围只有几个百分点（Ni为5%，Zn为2%），而在mn基化合物中，溶解度范围可以扩展到Zn的20%或Ni的30%。在超导Bi{sub 1.2}Pb{sub 0.8}La{sub 0.5}Sr{sub 1.5}Cu{sub 1{-}{ital x}M{ital x}}O{sub 6+{ital y}}体系中，Ni和Zn以近似相同的速率（8k /mol %）降低了{ital T}{sub {ital c}}，因此对于其他高{ital T}{sub {ital c}}铜酸盐来说，掺杂剂的磁性对{ital T}{sub {ital c}}没有影响。mn基材料的反铁磁有序，我们发现在Ni和Zn取代后，磁性Ni (5 K/(10 at)时，反铁磁转变温度{ital T}{sub {ital N}}降低的不那么明显。%))比非磁性Zn （30k /(10at)）要好。%)。对交换相互作用的考虑可以解释这些结果。«少
The effects of the substitution for Cu or Mn by either a magnetic (Ni) or a nonmagnetic (Zn) 3{ital d} metal on the physical properties of the superconducting compounds Bi{sub 1.2}Pb{sub 0.8}La{sub 0.5}Sr{sub 1.5}CuO{sub 6+{ital y}} and of the antiferromagnetic insulating phases Bi{sub 2}Sr{sub 2}MnO{sub 6+{ital y}} and BiPbSr{sub 2}MnO{sub 6}, all isostructural to the 10-K superconducting Bi{sub 2}Sr{sub 2}CuO{sub {ital z}} (2:2:0:1) phase, have been investigated with use of x-ray powder diffraction, susceptibility, and resistivity measurements. We found that both Ni and Zn substitute for Cu and Mn with a range of solubility strongly dependent upon the nature of both the dopant and the host compound. For instance, in the Cu-based compounds the range of solubility is only a few percent (5% for Ni and 2% for Zn) whereas in the Mn-based compounds the range of solu- bility can be extended up to 20% for Zn or 30% for Ni. In the superconducting Bi{sub 1.2}Pb{sub 0.8}La{sub 0.5}Sr{sub 1.5}Cu{sub 1{minus}{ital x}M{ital x}}O{sub 6+{ital y}} system, both Ni and Zn depress the {ital T}{sub {ital c}} at approximately the same rate (8 K/mol %), so that the magnetism of the dopant has no effect on the {ital T}{sub {ital c}} asmore » observed for the other high-{ital T}{sub {ital c}} cuprates. The Mn-based materials order antiferromagnetically and we found that upon substitution by Ni and Zn the antiferromagnetic transition temperature {ital T}{sub {ital N}} decreases less dramatically for the magnetic Ni (5 K/(10 at. %)) than for the nonmagnetic Zn (30 K/(10 at. %)). A consideration of the exchange interactions can account for these results.« less