Crystal Structure and Microwave Dielectric Properties of(1-x)La(Zn_<1/2>Ti_<1/2>)O_3-xSrTiO_3 System

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概要

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• The crystal structure and microwave dielectric properties of the (1-x)La(Zn_<1/2>Ti_<1/2>)O_<3-x>SrTiO_3 system were investigated using X-ray powder diffraction and a network analyzer. The crystal structure of the solid solution approached that of a cubic perovskite with an increasing amount of SrTiO_3. B-site cation ordering, in-phase tilting, and anti-phase tilting of oxygen octahedra disappeared at x = 0.4, 0.6, and 0.9, respectively. The relative permittivity (ε_r) and temperature coefficient of resonant frequency (〓_f) of the solid solutions showed a nonlinear variation with no singularity. In particular, ε_r varied according to the mixture rule, 1/ε_<total>=υ_1/ε_1+υ_2/ε_2. This anomalous behavior was attributed to the structural characteristics of the system. The variation in 〓_f of the system is discussed in conjunction with other researchers' works.

• 社団法人応用物理学会の論文
• 1998-02-15

著者

• Hong Kug

  School Of Materials Science And Engineering Seoul National University

• Kim In-tae

  Ceramics Division Korea Institute Of Science And Technology

• Cho S‐y

  Samsung Electronics Kyunggi‐do Kor

• Hong Kug

  School Of Material Sciences & Engineering Seoul National University

• CHO Seo-Yong

  School of Materials Science and Engineering, Seoul National University

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