Stress Dependence of Photoinduced Magnetostriction in Yttrium Iron Garnets

Abstract:

The present study investigates photoinduced changes of magnetostriction in yttrium-iron garnet (YIG) single crystals. Single crystals of Y₃Fe₅O₁₂ were grown from BaO-B₂O₃ (YIG(Ba)), PbO-PbF₂ (YIG(Pb)) and PbO-PbF₂:SiO₂ (YIG(Si)) solutions from flux. Photoinduced magnetostrictive response types for these three kinds of YIG crystals are quite different. The magnetostrictive constants, the trigonal symmetric internal stresses and their photoinduced changes were calculated for all samples. The conclusion is that the internal stresses in the crystal lattice, caused by defects, determine the photoinduced response type of the crystal.

• Periodical: Solid State Phenomena (Volume 215)
• Pages: 314-319
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.215.314
• Online since: April 2014
• Authors: Natalya V. Vorob'eva*
• Keywords: Crystal Growth, Defect, Magnetic Material, Magnetoelastic Properties

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