Electron Spin Resonance of Gd3+ in Orthorhombic and Rhombohedral Phases of BaTiO3

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概要

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• The electron spin resonance of Gd3+ has been studied in the orthorhombic and rhombohedral phases of BaTiO3. The main features of Gd3+ resonances are summarized in their relation to Fe3+ resonances as follows: (1) The axis of the axial crystalline field in the orthorhombic phase is parallel to the $\langle 110\rangle$ polar axis for Gd3+, while this axis is parallel to $\langle 001\rangle$ for Fe3+. (2) The magnitude of the axial crystalline field parameter remains almost constant through the three ferroelectric phases for Gd3+, while this magnitude for Fe3+ almost vanishes in the rhombohedral phase. To explain these differences the electric field gradients at the Ba2+ site were calculated and plausible models for the array of the induced electric dipole moments in the surrounding oxygen ions were discussed. Measurements on Eu2+ have been also performed in the powder samples of BaTiO3.

• Physical Society of Japanの論文
• 1968-03-05

著者

• Takeda Takeshi

  Central Research Laboratory Matsushita Electric Industrial Co. Ltd.

• Takeda Takeshi

  Central Research Laboratory Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka

関連論文

• Resistivity of Gd^ Doped BaTiO_3 Crystals Grown in Molten KF
• Two Sets of E. S. R. of Gd^ in BaTiO_3 Ceramic Semiconductor
• Substituting Sites of Rare Earth Ions in BaTiO_3
• Electron Spin Resonance of Eu^ in Cubic and Tetragonal Phases of BaTiO_3
• Allowed and Forbidden Transitions in the Electron Spin Resonance of Mn^ in CaSO_4
• Electron Spin Resonance of Gd^ in Reduced BaTiO_3
• Observation of the Ti^ and Ti^ hf Structure in the F-Center ESR Line in BaTiO_3
• Electron Spin Resonances in Reduced BaTiO_3
• Electron Spin Resonance of Gd3+ in Orthorhombic and Rhombohedral Phases of BaTiO3

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