The improper ferroelastic phase transition of letovicite, (NH4)3H(SO4)2: An optical birefringence, X-ray diffraction and Raman spectroscopic study

Phase Transitions

Volumn 59, Issue 1-3 SEC. B, 1996, Pages 61-76

  Schwalowsky, L ^a   Bismayer, U ^a,b   Lippmann, Th ^c  

^a UNIVERSITY OF HAMBURG   (Germany)

^b LEIBNIZ UNIVERSITY HANNOVER   (Germany)

^c SAARLAND UNIVERSITY   (Germany)

Author keywords

Improper ferroelastic phase transition; Letovicite; Morphic birefringence; Raman spectroscopy; Synchrotron X ray diffraction

Indexed keywords

AMMONIUM COMPOUNDS; BIREFRINGENCE; BRILLOUIN SCATTERING; MINERALS; RAMAN SPECTROSCOPY; SATURATION (MATERIALS COMPOSITION); THERMODYNAMIC PROPERTIES; X RAY DIFFRACTION ANALYSIS;

IMPROPER FERROELASTIC PHASE TRANSITION; LANDAU TYPE FREE ENERGY EXPANSION; LETOVICITE; SLATER INSTABILITY;

PHASE TRANSITIONS;

EID: 0030396471     PISSN: 01411594     EISSN: None     Source Type: Journal    
DOI: 10.1080/01411599608220036     Document Type: Article

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