title: Dielectric characterization of a nonlinear optical material.
abstract: Batisite was reported to be a nonlinear optical material showing second harmonic generation. Using dielectric spectroscopy and polarization measurements, we provide a thorough investigation of the dielectric and charge-transport properties of this material. Batisite shows the typical characteristics of a linear lossy dielectric. No evidence for ferro- or antiferroelectric polarization is found. As the second-harmonic generation observed in batisite points to a non-centrosymmetric structure, this material is piezoelectric, but most likely not ferroelectric. In addition, we found evidence for hopping charge transport of localized charge carriers and a relaxational process at low temperatures.
authors.affiliation: Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86135 Augsburg, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Lunkenheimer
authors.affiliation: Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86135 Augsburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Krohns
authors.affiliation: 1] Department of Earth and Environmental Sciences, Materials Research, LMU Munich, 80333 Munich, Germany [2].
authors.forename: F
authors.initials: F
authors.lastname: Gemander
authors.affiliation: Department of Earth and Environmental Sciences, Materials Research, LMU Munich, 80333 Munich, Germany.
authors.forename: W W
authors.initials: WW
authors.lastname: Schmahl
authors.affiliation: Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86135 Augsburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Loidl
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