Raman and magnetic susceptibility studies of hexagonal elpasolite Cs2NaAlF6:Cr3+

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:321

Article

Sosman, L. P.¹  Yokaichiya, F.^2,3  Bordallo, H. N.^2,3 

[1] Univ Estado Rio De Janeiro, Inst Fis, BR-20550900 Rio De Janeiro, Brazil

[2] Helmholtz Zentrum Berlin, D-14109 Berlin, Germany

[3] Mat & Energie GmbH, D-14109 Berlin, Germany

关键词: Polarized Raman;    Elpasolite;    Chromium doping;    Magnetic correlation;   

DOI  :  10.1016/j.jmmm.2009.01.026

来源: Elsevier

【 摘 要 】

Polarized Raman scattering spectra of distorted R (3m) over bar elpasolites Cs2NaAlF6 with a Cr3+ content of 0.1, 0.5 and 3.0 at% have been studied at both room temperature and 16 K. A shoulder located near the very intense band assigned to the AlF63- A(1g) mode indicates that the guest ion causes only small perturbations to the host lattice. Magnetic susceptibility measurements performed on the 0.1, 0.5, 3, 10 and 50 at% samples show that for particular concentrations the Cr3+ ions are not isolated, but participate to inter and/or intra-cluster magnetic exchange. (c) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

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