SPECTRAL STUDIES OF MAGNETIC-ORDERING IN THE CUPRATES R2BACUO5 (R=SM, EU, TM, YB, LU)

被引：27

作者：

PAUKOV, IV ^{[1
]}

POPOVA, MN ^{[1
]}

MILL, BV ^{[1
]}

机构：

[1] MV LOMONOSOV STATE UNIV,DEPT PHYS,MOSCOW 119899,USSR

来源：

PHYSICS LETTERS A | 1992年 / 169卷 / 04期

关键词：

D O I：

10.1016/0375-9601(92)90463-V

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High resolution optical absorption spectra of an intrinsic R3+ ion or Er3+ probe have been measured in the "green phases" R2BaCuO5 related to 123 high-T(c) superconductors. Evidence is given that the phase transitions observed in these compounds earlier are of magnetic nature. Additional spin-reorientation transitions were found in Yb2BaCuOs and Lu2BaCuO5. The suggestion is made that the magnetic structures of the copper subsystem are the same in each of the following two groups: (1) Y2BaCuO5 and Lu2BaCuO5 at T(R) < T < T(N), Eu2BaCuO5; (2) Yb2BaCuO5 at T(R) < T < T(N), Y2BaCuO5 and Lu2BaCuO5 at T< T(R), Tm2BaCuO5.

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页码：301 / 307

页数：7

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