Elastic Properties of NaCl: OH at Low Temperatures

Eizaburo Kanda, Terutaka Goto, Hiroshi Yamada, Shozo Suto, Satoshi Tanaka, Toshizo Fujitat

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Low temperature behavior of elastic constants (C11&2014;C12)/2, C44 and C11 of NaCl crystals with OH impurity ions of various concentrations up to 650 ppm has been studied by means of an ultrasonic method. Pronounced softenings of the elastic constants below 50 K with minimum points around 0.8 K have been observed. The interaction between the elastic strain and the quadrupolar moments of the quantum tunneling states of an OH ion was found to be essential for the elastic anomalies. A variational method was employed to obtain the tunneling states of an OH ion in an off-center potential, and the quadrupolar moments of the states were calculated. The linear response theory for the quadrupolar moments has been adopted to explain the softening of the elastic constant.

Original languageEnglish
Pages (from-to)175-185
Number of pages11
Journaljournal of the physical society of japan
Issue number1
Publication statusPublished - 1985 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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