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Linear and quadratic magnetoelectric (ME) effects in copper chlorine boracite

Published inJournal de physique. Colloque, vol. 49, no. C8, p. 849-850
Publication date1988
Abstract

The magnetoelec. effect on a (001)orthorhombic cut Cu-Cl boracite crystal (Cu3B7O13Cl) shows linear and 2nd order components. At 4 K, with P3induced = a33H3 + (b311H12 + b322H22 + b333H32)/2, one obtains: a33 = 1.2 * 10-13 [s/m], b311 ~ 0, b322 = 3.6 * 10-19 [s/A] and b333 = -1.2 * 10-19 [s/A], the signs being understood relative to one another. These results, together with the observation of ME butterfly loops, corroborate magnetic point group m'm'2, as deduced from magnetic torque measurements (M. Haida et al., 1975).

Keywords
  • Magnetoelec effect copper chlorine boracite
  • Dielec polarization copper chlorine boracite
Funding
  • Swiss National Science Foundation - 1987
Citation (ISO format)
RIVERA, Jean-Pierre, SCHMID, Hans. Linear and quadratic magnetoelectric (ME) effects in copper chlorine boracite. In: Journal de physique. Colloque, 1988, vol. 49, p. 849–850. doi: 10.1051/jphyscol:19888383
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Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0449-1947
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