EPR of Mn^<2+>in NH_4Br Single Crystals

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概要

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• The EPR of Mu" in NH,(Br single crystals has been studied at X-band in thetemperature range from 573 K to 77 K. At room temperature, an isotropicspectrum (spectrum-I) comprising a sextet superimposed on a broad line is ob-served. On heating the crystal up to 400 K the sextet disappears due to explu[sionof Mu" impurity from the crystal. On lowering the temperature, the isotropicspectrum-I disappears about at 230 K and a new spectrum (spectrum-II) appearsbelow this temperature. The spectrum-II is highly anistropic and unusual and isbelieved to be due to very large zero field splitting of Mn". Spectrum-I is at-tributed to Mn" ions substituting for NHJ with charge compensating NHJvacancies far away from Mn" ' . The transformation of spectrum-I into spectrum-IIis attributed to the structural transformation of NH?Br.

• 社団法人日本物理学会の論文
• 1985-06-15

著者

• Upreti G

  Physics Department Indian Institute Of Tachnology:physics Department Concordia University

• CHAND Prem

  Physics Department Indian Institute of Tachnology

• UPRETI G.C.

  Physics Department Indian Institute of Tachnology

• Chand P

  Indian Inst. Technol. Kanpur Ind

関連論文

• EPR of Mn^in NH_4Br Single Crystals
• Electron Paramagnetic Resonance Study of VO^ Doped in Single Crystals of CoK_2(SO_4)_2・6H_2O

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