PYROELECTRIC, FERROELECTRIC, DIELECTRIC AND THERMAL-PROPERTIES OF MN3B7O13BR SINGLE-CRYSTALS

Authors
CAMPAMOLINA J CASTELLANOSGUZMAN AG BARCENASOTO M REYESGOMEZ J
Citation
J. Campamolina et al., PYROELECTRIC, FERROELECTRIC, DIELECTRIC AND THERMAL-PROPERTIES OF MN3B7O13BR SINGLE-CRYSTALS, Solid state communications, 89(11), 1994, pp. 963-969
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
89
Issue
11
Year of publication
1994
Pages
963 - 969
Database
ISI
SICI code
0038-1098(1994)89:11<963:PFDATO>2.0.ZU;2-L
Abstract
Single crystals of Mn3B7O13Br (Mn-Br) boracite were studied between 30 0 and 550K by means of thermal, dielectric, pyroelectric and ferroelec tric characterization, under simultaneous visual control of the ferroe lectric/ferroelastic domain state of the samples. We observe an unusua l change of sign of the pyroelectric coefficient in Mn-Br at about 440 K which can be an indication of the existence of a new phase transiti on in this compound. A preliminary DSC study seems to confirm the pres ence of such a transition.