Magnetism and superconductivity in 3 d -metal-substituted Bi-based cuprates having the 2:2:0:1 structure
- Bell Communications Research, Red Bank, New Jersey 07701 (USA)
- National Research Council of Canada, Ottawa, (Canada)
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}} as 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.
- OSTI ID:
- 5690631
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:7; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IMPURITIES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LEAD COMPOUNDS
LEAD OXIDES
MAGNETIC PROPERTIES
MATERIALS
NICKEL ADDITIONS
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZINC ADDITIONS
ZINC ALLOYS