Neutron Electrical and Magnetic Investigations of the PrFeO_3-PbTiO_3 System

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概要

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• The solid solutions of the (1-x)PrFeO_3-xPbTiO_3 system were explored for the purpose of finding ferroelectromagnetism. Neutron diffraction data were collected at room temperature to 700℃ and refined by the Rietveld method for magnetic and crystal structure analyses Dielectric permittivity (ε_r) and loss tangent were measured by a low-frequency impedance analyzer for varying frequency. The hysteresis curves of the polarization-electric field and magnetization-magnetic field were measured at room temperature. At room temperature, the crystal structure symmetry of the solid solutions change from orthorhombic to tetragonal i.e., Pbnm. 14cm, and P4mm with increasing PbTiO_3 content. The solid solution at x = 0.8 undergoes structural transition from tetragonal to cubic phase with increasing temperature in a series of I4 cm, I4/mcm (P4/mmm), and Pm3 m The solid solution composition of 0.4 〓 x 〓 0.6 exhibited ferromagnetism and the compositions of x 〓 0.4 were ferroelectric.

• 社団法人応用物理学会の論文
• 2001-09-30

著者

• Kim Jeong

  Dept. Of Arch. Eng'g Kyung Hee University

• Jang P

  Chongju Univ. Chungbuk Kor

• Cheon Chae-il

  Dept. Of Materials And Mechanical Engineering Hoseo University Asian

• SHIMI Hae-Seop

  Neutron Physics Dept. Hanaro Center,KAERI

• JANG Pyong

  Dept. of Physics, Chongju University

• Shimi Hae-seop

  Neutron Physics Dept. Hanaro Center Kaeri

• Kim Jeong

  Dept. Of Materials And Mechanical Engineering Hoseo University Asan

• Shim Hae-Seop

  Neutron Physics Dept. Hanaro Center,KAERI

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