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    STUDIA PHYSICA - Issue no. 1 / 2002  
         
  Article:   EPR AND MAGNETIC SUSCEPTIBILITY STUDIES OF 70TEO2-25B2O3-5SRO GLASSES CONTAINING CR3+ IONS.

Authors:  I. ARDELEAN, M. PETEANU, N. MURESAN.
 
       
         
  Abstract:  Electronic paramagnetic resonance and magnetic susceptibility measurements revealed the chromium ions distribution and interactions involving them in xCr2O3 (100-x) [70TeO2 25B2O3 5SrO] glasses within 0 < x <=10 mol %. The only detected valence state was Cr3+. Depending on the Cr2O3 content of samples the preponderance of Cr3+ ions identified as isolated in strongly distorted octahedral symmetric sites, or associated in exchange coupled pairs was pointed out.  
         
     
         
         
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