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Helmut Klapper, Hartmut Kutzke, Siegfried Haussühl

Physical properties of stable monoclinic and metastable trigonal 4-methylbenzophenone

Pyroelectric, dielectric and piezoelectric coefficients of metastable 4-methylbenzophenone, point group 3, have been determined by standard methods. Furthermore, thermal expansion and elastic properties of this phase and of the stable monoclinic phase have been studied. The pyroelectric effect is comparable with that of tourmaline, the piezoelectric effects to those of a-quartz. The differences between the two polymorphs with respect to thermal expansion and to elastic and thermoelastic properties are small, but nevertheless significant.

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 215, 03/2000
Pages: 187

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