Phase transitions in (NH4)2SO4 and (NH4)2SO4-K2SO4 mixed crystals as studied by EPR of CrO3-radicals

Mishra, N. C. ; Srinivasan, R. (1984) Phase transitions in (NH4)2SO4 and (NH4)2SO4-K2SO4 mixed crystals as studied by EPR of CrO3-radicals Chemical Physics Letters, 108 (3). pp. 288-291. ISSN 0009-2614

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/000926...

Related URL: http://dx.doi.org/10.1016/0009-2614(84)87066-9

Abstract

A study of the phase transitions in (NH4)2SO4 and (NH4)2SO4-K2SO4 mixed crystals by EPR of the CrO3- ion is reported. The results indicate a bilinear coupling of the order parameter with spontaneous polarization and a crossover from a discontinuous to a continuous nature of the phase transition in mixed crystals.

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