High-resolution spectroscopy of rare earth cuprates and nickelates

This presentation gives a brief review of the work on the R2Cu2O5 (R=Tb-Lu, Y, Sc, In) and R2BaMO5 (R=Nd, Sm-Gd, Dy-Lu and Y, M=Cu, Ni) cuprates and nickelates, performed by the author's group. We measured high-resolution optical absorption spectra of an intrinsic R3+ ion or Er3+ probe in these...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 275-277; pp. 142 - 147
Main Author Popova, Marina N
Format Journal Article
LanguageEnglish
Published Elsevier B.V 24.07.1998
Subjects
Fourier transform spectroscopy
R2BaMO5 (M=Cu, Ni)
R2Cu2O5
R2Cu2O5
Fourier transform spectroscopy
R2BaMO5 (M=Cu, Ni)
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Summary:This presentation gives a brief review of the work on the R2Cu2O5 (R=Tb-Lu, Y, Sc, In) and R2BaMO5 (R=Nd, Sm-Gd, Dy-Lu and Y, M=Cu, Ni) cuprates and nickelates, performed by the author's group. We measured high-resolution optical absorption spectra of an intrinsic R3+ ion or Er3+ probe in these compounds, by means of a Fourier transform spectrometer. On the basis of these spectra, we investigated crystal field splittings of the rare-earth energy levels, magnetic ordering, low-dimensional magnetic correlations, the arrangement of magnetic moments of transition metal ions and peculiarities of spin-reorientation phase transitions. We have registered for the first time, magnetic phase transitions, some of them not detectable by other methods, in R2BaCuO5 with R=Nd, Dy, Yb, Lu, Y and in R2BaNiO5 with R=Nd, Sm, Gd, Eu, Dy, Ho, Tm, Lu.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(98)00292-8