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Electric field and stress induced phase transitions in Cr-Cl boracite

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Published in Ferroelectrics. 1991, vol. 116, no. 3-4, p. 251-260
Abstract By means of an optical investigation of Cr-Cl boracite crystals in polarized light it has been found that an orthorhombic mm2 phase is induced by stress, generated at the mech. non-matching cubic (.hivin.43m)/tetragonal (.hivin.42m) interface, during the first order phase transition at T1 = 264 K. Elec. field studies under simultaneous optical control have shown that the orthorhombic mm2 phase can also be induced in the entire temp. range of the non-polar .hivin.42m phase above an elec. threshold field strength of about 90 kV cm-1. On the basis of optical domain observations and elec. measurements, a revised elec. field strength/temp. phase diagram is proposed and discussed.
Keywords Induced phase transitionsFerroelastic/ferroelectric domainsCr-Cl boracite
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Project FNS: 1990
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YE, Zuo-Guang, RIVERA, Jean-Pierre, SCHMID, Hans. Electric field and stress induced phase transitions in Cr-Cl boracite. In: Ferroelectrics, 1991, vol. 116, n° 3-4, p. 251-260. https://archive-ouverte.unige.ch/unige:32035

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Deposited on : 2013-12-11

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