Domain structure and ferroelastic phase transition in (CnH2n+1NH3)2MCl4 (n = 1, 2, 3 and M = Cd, Mn)

Jeong Lyong Kim, Kum Bae Kim, Kwang Sei Lee, Jun Kun Kang, Cheol Eui Lee, Dal Young Kim, Sook Il Kwun

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Abstract

The ferroelastic domain structure of the perovskite-type layer crystals (CnH2n+1NH3)2MCl4 (n=1,2,3 ; M=Cd,Mn) was observed and investigated in detail by means of a polarizing microscope. The orientation of the domain walls in the orthorhombic room temperature (ORT) phase has been determined. Temperature-dependent evolution of ferroelastic domain structure of (C2H5NH3)2MnCl4 was studied through a ORT → tetragonal high temperature (THT) → ORT cycle. As the temperature approaches 155°C, the domain-wall density increases but ferroelastic-paraelastic phase transition seems to be impeded by inherent thermal decomposition at the surface.

Original languageEnglish
Pages (from-to)S764-S767
JournalJournal of the Korean Physical Society
Volume32
Issue numberSUPPL. 2
Publication statusPublished - 1998 Feb

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kim, J. L., Kim, K. B., Lee, K. S., Kang, J. K., Lee, C. E., Kim, D. Y., & Kwun, S. I. (1998). Domain structure and ferroelastic phase transition in (CnH2n+1NH3)2MCl4 (n = 1, 2, 3 and M = Cd, Mn). Journal of the Korean Physical Society, 32(SUPPL. 2), S764-S767.