Structure and physical properties of layered double perovskite NdBaCo{sub 2}O{sub 5.50+{delta}} ({delta} {approx} 0.25)
- Belarussian National Academy of Sciences, Joint Institute of Solid State and Semiconductor Physics (Belarus)
- Polish Academy of Sciences, Institute of Physics (Poland)
- Hann Maitner Institute (Germany)
Magnetic, electric, and elastic properties of the crystal and magnetic structure of double layered perovskite NdBaCo{sub 2}O{sub 5.50+{delta}} are studied by the neutron diffraction method at various temperatures. The data are analyzed using two models of crystal structure. In the first model, the sample consists of two crystal-structure phases with ordered and disordered arrangements of oxygen vacancies. In the second model, a new crystal-structure phase is formed in this compound, which is characterized by ordering of oxygen vacancies in the plane of the rare-earth ion in the 1c crystallographic position (0, 0, 1/2) of space group Pmmm. Two crystal-structure models correspond to different types of magnetic ordering (a mixture of a ferromagnetic phase and a G-type antiferromagnetic phase is presumed in the two-phase crystal-structure model, while a canted antiferromagnetic structure is presumed in the one-phase crystal structure model). The behavior of electric and elastic parameters is better described in the first model, while neutron diffraction studies are in better agreement with the second model.
- OSTI ID:
- 21067604
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 5 Vol. 103; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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