Pressure-Induced Quantum Ferroelectricity in Tris-Sarcosine Calcium Bromide ((CH3NHCH2COOH)3CaBr2)
作者： Tomoyuki Hikita , Taketoki Maruyama
DOI: 10.1143/JPSJ.61.2840
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摘要: Dielectric properties of tris-sarcosine bromide ((CH 3 NHCH 2 COOH) CaBr ) which is isomorphous to the ferroelectric crystal calcium chloride CaCl , TSCC) have been investigated under high pressure down 4.2 K. The hydrostatic excellent quality has generated using helium gas as a transmitting medium. activity confirmed by dielectric hysteresis loops. pressure-temperature phase diagram transition determined from peak constant b -plate in various isobaric measurements. temperature well represented an equation T C ∝( p - 1/2 known relationship for quantum ferroelectrics.
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