@article{oai:ous.repo.nii.ac.jp:00000847, author = {Fujii, Katsuhiko and Fujii, Katsuhiko and Yamada, Juntaro and Yamada, Juntaro and Matsubara, Takeo and Matsubara, Takeo}, journal = {岡山理科大学紀要. A, 自然科学, Bulletin of Okayama University of Science. A, Natural Sciences}, month = {Mar}, note = {P(論文), A theory of quantum paraelectricity is presented to explain the nearly ferroelectric properties of some perovskite structure substances such as SrTiO_3 and KTaO_3 on the basis of the self-consistent phonon approximation. Particular emphasis is laid upon the effect of the mode-mode couplings on the phase boundary between ferro and paraelectric regions and it is shown that the trend toward the quantum paraelectricity is suppressed by short range interaction and enhanced by long range dipole interactions.}, pages = {13--20}, title = {Self-consistent Phonon Theory of Quantum Paraelectrics}, volume = {25}, year = {1990}, yomi = {フジイ, カツヒコ and ヤマダ, ジュンタロウ and マツバラ, タケオ} }