Dielectric anomalies in Nd³⁺ doped Ba₂NaNb₅O₁₅ laser crystal

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• 作者：M.E. Torres ; A.A. Kaminskii ; C. Gonzá ; lez-Silgo ; J. Gonzá ; lez Platas ; D. Jaque ; A. Ró ; denas ; I.R. Martí ; n ; V. Laví ; n
• 关键词：Nonlinear ferroelectric crystal ; BNN ; Nd³⁺ ; Laser
• 刊名：Journal of Alloys and Compounds
• 出版年：2008
• 出版时间：28 February 2008
• 年：2008
• 卷：451
• 期：1-2
• 页码：198-200
• 全文大小：285 K

文摘

In the present study we analyze the thermal and dielectric behavior from 292 to 930 K of BNN doped with Nd³⁺ (1 at. % ). The crystal was grown by the Czochralski method along the tetragonal axis. The complicated dielectric permittivity me=""mml4"">method=retrieve&_udi=B6TWY-4NHM54N-8&_mathId=mml4&_user=10&_cdi=5575&_rdoc=44&_acct=C000050221&_version=1&_userid=10&md5=e3c32eafda869378cef2df3b47e749f8"" title=""Click to view the MathML source"">ε^′_r behavior, which depends on the cooling or heating process, was compared with the pure crystal. Two unexpected me=""mml5"">method=retrieve&_udi=B6TWY-4NHM54N-8&_mathId=mml5&_user=10&_cdi=5575&_rdoc=44&_acct=C000050221&_version=1&_userid=10&md5=09151e833a21a3fc5bfd5e562bb9262d"" title=""Click to view the MathML source"">ε^′_r anomalies were detected around 318 and 847 K while the remaining transitions are in good agreement with the thermal expansion measurements.