Ultrasonic Study of KH_2PO_4 near the Pressure-Induced Tricritical Point
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概要
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Elastic stiffness c35 of KH2P0. was measured at 10 MHz simultaneously withthe dielectric constant e. as a function of temperature at several fixed hydrostaticpressures. As predicted by the Landau theory, no distinct discontinuous changewas observed in the elastic Curie constant Alp) and the dielectric Curie constantC(p) of the paraelectric phase around the tricritical point. The elastic Curieconstant decreases with pressure as (A(p)-' - /1(0)-')//1(0)-': (0.065 i0.0I4)p.The piezoelectric strain constant b..(p) which is defined by the relation .{(;):b.5(p).C(7>) was found to decrease with pressure as (Z>.5(p) -b..(0))/635(0)=( -0.02830.008);.
- 社団法人日本物理学会の論文
- 1984-04-15
著者
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Iwasaki Akinori
Department of Thoracic, Breast, Endocrine, and Pediatric surgery, Fukuoka University
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HIKITA Tomoyuki
Department of Applied Physics,Faculty of Engineering,Tohoku University
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IKEDA Takuro
Department of Applied Physics,Faculty of Engineering,Tohoku University
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Hikita Tomoyuki
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Iwasaki Akinori
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Ikeda Takuro
Department Of Applied Physics Faculty Engineering Tohoku University
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Iwasaki Akinori
Departement of Chest Surgery, Fukuoka University Hospital
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