High pressure synthesis and study of magnetic and transport properties of Pb-substituted manganites with perovskite structure
Journal Article
·
· Materials Research Bulletin
- Academy of Sciences of Belarus, Minsk (Belarus). Inst. of Physics of Solids and Semiconductors
- Polish Academy of Sciences, Warsaw (Poland). Inst. of Physics
The stoichiometric La{sub 1{minus}x}Pb{sub x}MnO{sub 3} (x {le} 0.6) and La{sub 0.56}Pb{sub 0.44}MnO{sub 2.56}F{sub 0.44} as well as nonstoichiometric La{sub 1{minus}x}Pb{sub x}MnO{sub 3{minus}y} (x {le} 0.44) solid solutions with perovskite structure have been obtained under high pressure conditions. It was demonstrated that these compounds are ferromagnetic in a wide range of Pb concentrations and exhibit large magnetoresistance in spite of the absence of Mn{sup 4+} ions. It is supposed that magnetic ordering in these materials is governed by superexchange interaction via oxygen.
- OSTI ID:
- 586007
- Journal Information:
- Materials Research Bulletin, Vol. 32, Issue 12; Other Information: PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
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