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- W2985085903 abstract "A clear physics picture of TbBaCo$_{2}$O$_{5.5}$ is revealed on the basis of density functional theory calculations. An antiferromagnetic (AFM) superexchange coupling between the almost high-spin Co$^{3+}$ ions competes with a ferromagnetic (FM) interaction mediated by both p-d exchange and double exchange, being responsible for the observed AFM-FM transition. And the metal-insulator transition is accompanied by an xy/xz orbital-ordering transition. Moreover, this picture can be generalized to the whole lanthanide series, and it is predicted that a few room-temperature magnetoresistance materials could be found in LnBa$_{1-x}$A$_{x}$Co$_{2}$O$_{5+delta}$ (Ln=Ho,Er,Tm,Yb,Lu; A=Sr,Ca,Mg)." @default.
- W2985085903 created "2019-11-22" @default.
- W2985085903 creator A5072316347 @default.
- W2985085903 date "2001-06-19" @default.
- W2985085903 modified "2023-09-24" @default.
- W2985085903 title "Spin state and phase competition in TbBaCo_{2}O_{5.5} and the lanthanide series LnBaCo_{2}O_{5+x} (0<=x<=1)" @default.
- W2985085903 hasPublicationYear "2001" @default.
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