Abstract

The low-frequency internal friction Q^–1 and shear modulus G have been studied by the inverted torsion pendulum method for a series of crystals belonging to potassium dihydrogen phosphate family: KH₂PO₄, KD₂PO₄, 0.95KH₂PO₄–0.05NH₄H₂PO₄, RbH₂PO₄, RbH₂AsO₄, and CsH₂AsO₄. A number of anomalies have been revealed in the temperature dependences Q^–1(T) and G(T), both in the ferroelectric and paraelectric phases of these crystals; the nature of these anomalies is discussed.

中文翻译：

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磷酸二氢钾族晶体的低频内摩擦

摘要

采用倒立扭摆法研究了一系列磷酸二氢钾家族晶体的低频内耗Q ^–1和剪切模量G ：KH ₂ PO ₄、KD ₂ PO ₄、0.95KH ₂ PO ₄ – 0.05NH ₄ H ₂ PO ₄、RbH ₂ PO ₄、RbH ₂ AsO ₄和CsH ₂ AsO ₄。在这些晶体的铁电相和顺电相中，Q ^–1 ( T ) 和G ( T )的温度依赖性已揭示出许多异常现象；讨论了这些异常现象的性质。