S 53 Shein, I. R. Electronic and magnetic properties of new quaternary oxybismuthides LaOMBi(where M= V, Cr, . . . , Ni, Cu) from first principles / I. R. Shein, V. L. Kozhevnikov, A. L. Ivanovskii // Physics Letters A. - 2008. - Vol. 372. - P.5838-5840 : il. - Bibliogr. : p. 5840 (18 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): СВОЙСТВА ЭЛЕКТРОННЫЕ -- СВОЙСТВА МАГНИТНЫЕ -- ОКСИВИСМУТИДЫ МЕТАЛЛОВ -- МАТЕРИАЛЫ СВЕРХПРОВОДЯЩИЕ Аннотация: For prediction of new parent phases for Fe-containing superconducting materials by means of the FPLAPW-GGA method the structural, electronic and magnetic properties of series of quaternary oxybismuthides LaOMBi (where M= V, Cr, . . . , Ni, Cu) are investigated for the first time. Our preliminary conclusion is that LaONiBi may be a suitable phase for search of new superconducting materials Полный текст |
N 52 New Superconductor with a Layered Crystal Structure: Nickel Oxybismuthide LaO1-deltaNiBi / V. L. Kozhevnikov, O. N. Leonidova, A. L. Ivanovskii, I. R. Shein, B. N. Goshchitskii, A. E. Kar'kin // JETP Letters. - 2008. - Vol. 87, № 11. - P649-651 : il. - Bibliogr. : p. 651 (18 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ОКСИВИСМУТИД НИКЕЛЯ -- ОКСИВИСМУТИДЫ МЕТАЛЛОВ -- СВЕРХПРОВОДНИКИ Аннотация: The results of synthesizing a new layered phase—nickel oxybismuthide LaO 1 –δNiBi in a series of superconducting oxypnictides—and its properties in the superconducting and normal states are reported. Although the temperature of the transition of this phase to the superconducting state, Tc~ 4 K, is much lower than the value Tc= 55 K reached at present in oxyarsenide SmO1 –δ FeAs, the similarity of the crystal structures and ρ(T) dependencies indicates that the mechanism responsible for the appearance of the semiconducting state is the same in lanthane oxybismuthide and samarium oxyarsenide Полный текст |