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Linear and quadratic magnetoelectric (ME) effect in Ni-Cl boracite

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Published in Journal of Applied Physics. 1991, vol. 70, no. 10, p. 6410-6412
Abstract Quasistatic and dynamic measurements of the magnetic field induced magnetoelec. polarization (MEH effect) have been performed in the weakly ferromagnetic/ferroelec./ferroelastic phase of point group m'm2' of Ni-Cl boracite between 1.8 and 9 K (=Tc) and above. For the first time the quadratic MEH effect of Ni-Cl boracite has been measured and sepd. from the linear one. The results allow us to discard the existence of a previously assumed antiferromagnetic phase mm2 between 9 and 25 K. Above 9 K, the phase is paramagnetic (mm21;). The coeffs. of the linear (a23, a32) and quadratic (b311, b322, b333, and b223) MEH effect are given for 4.2 K. a32 And b322 are also given vs temp.
Keywords Magnetoelec polarization nickel chlorine boraciteFerroelec ferromagnetic nickel chlorine boracite
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Project FNS: 1990
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RIVERA, Jean-Pierre, SCHMID, Hans. Linear and quadratic magnetoelectric (ME) effect in Ni-Cl boracite. In: Journal of Applied Physics, 1991, vol. 70, n° 10, p. 6410-6412. https://archive-ouverte.unige.ch/unige:31439

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Deposited on : 2013-11-27

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