0000000000617561

AUTHOR

S. W. Wan

showing 2 related works from this author

Raman measurements in the intermediate phase of [N(CH3)4]2ZnI4

1991

Abstract Raman spectra and deviation angle of the indicatrix have been measured in the intermediate phase, between the two transition temperatures T c1 = 255 K and T c2 = 217 K. The results are consistent with the existence, in this phase, of large domains, piled up along the c-axis (Pnma notation).

symbols.namesakeCrystallographyMaterials sciencePhase (matter)symbolsGeneral Materials ScienceRaman spectroscopyInstrumentationPhase Transitions
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Experimental study of the crystals [N(CH3)4]2Znl4by Raman spectroscopy and optical measurements; comparison with isomorph compounds

1992

Abstract Raman spectra and rotation angle of the indicatrix have been measured in the intermediate phase of the crystal [N(CH3)4]2Znl4 The results are consistent with the existence of large ferroelastric domains piled up along the a axis in a monoclinic phase P1121/a (Pnma notation in the paraelectric phase). The phase sequence (Pnma-P1121/a-P21ca) in this compound is different from other members of [N(CH3)4]2BX4 family.

Materials scienceOptical measurementsDielectricCondensed Matter PhysicsRotationElectronic Optical and Magnetic MaterialsCrystalsymbols.namesakeCrystallographyNuclear magnetic resonancePhase (matter)symbolsRaman spectroscopyMonoclinic crystal systemFerroelectrics
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