High Pressure Raman Study of KNbO_3-KTaO_3 and KNbO_3-NaNbO_3 Mixed Crystals
スポンサーリンク
概要
- 論文の詳細を見る
High pressure Raman spectra of KNbO_3-KTaO_3 (KTN) and -NaNbO_3 (KNN) mixed crystals have been measured to study the behavior of the anomalous mode coupling as well as the phase transition and analyzed on the basis of the two-mode coupling model. The anomalous mode coupling has been observed for all samples under pressure. The mode coupling was observed without compression for K(Ta_xNb_<1-x>)O_3 crystals with x more than 40%. The upper B_1(TO) mode frequency of these coupling modes decreased with increase of Ta concentration for the KTN crystals, but remained constant independent of the Na concentration for the KNN crystals. Further, Ta doping plays an equivalent role to the pressure effect with respect to the upper B_1(TO) mode.
- 社団法人日本物理学会の論文
- 2003-03-15
著者
-
Ohi Kikuo
Department Of Physics School Of Science And Engineering Waseda Univrsity
-
Ohi Kikuo
Department Of Physics Ochanomizu University
-
Ishidate Takeo
Department Of Pediatrics Kitasato University Hospital.
-
Ishidate Takeo
Department Of Physics Of Scince Shizuoka University
-
SHAMIM Mirza
Department of Physics of Scince, Shizuoka University
-
Shamim Mirza
Department Of Physics Of Scince Shizuoka University
-
Shamim Mirza
Department Of Physics Faculty Of Science Shizuoka University
関連論文
- Raman Scattering of Ferroelectric Soft Mode in Sr_2Ta_2O_7
- Lattice Vibrational Properties of Crystalline Si-Ge Alloys
- ESR Study of 222 K Phase Transition in Hexagonal BaTiO_3
- Zeeman Quadrupole Spectra in p-dichlorobenzene and p-chlorobenzoic Acid
- Negative Differential Conductivity of Photoconducting KTaO_3
- Anterior Mediastinal Mass due to Malignant Lymphoma of Convoluted Lymphocytes
- Twin Boys with Severe CNS Malformations. Type II. Arnold Chiari Malformation and Cerebellar Dysgenesis with Meningomyelocele.
- Methylprednisolone Pulse Therapy in Treatment of Renal Disease in Children; Its Suppressive Effect for Lymphocyte and Correlation in Clinical Status
- Pulse Therapy on Lupus Nephritis in Children
- Study of Relaxation Mechanism of Poly-γ-Benzyle-L-Glutamate in Dioxane Solution by Light Scattering
- Second Harmonic Generation of Epitaxially-Grown GaN crystal
- Determination of the Relative Signs of Optical Nonlinear Susceptibility Components of Sodium Nitrite
- Tubular Lesions in Focal Glomerular Sclerosis in Children
- Sampling Time Dependence of Probability Distribution of Intensity Fluctuation Gaussian Light and Determination of the Corralation Time
- Brillouin Scattering and Thermal Expansion of SnCl_2・2H_2O
- Temperature Dependence of Second Harmonic Generation in Ca_2Sr(CH_3CH_2CO_2)_6
- Identification of Photochromic Absorption in KTaO_3 Doped with Ni and Fe
- Second Harmonic Generation in Li_2B_4O_7
- Coupled Acoustic Modes in Tetragonal BaTiO_3
- Phase Transition in Thiourea under High Pressure
- Optical Quenching of Photocurrent in KTaO_3 Doped with Fe
- Measurement of Weak and Broad-Band Raman Spectra from the Sample in a Diamond Anvil Cell : Application to Hydrogenated Amorphous Silicon
- Phase Transition in Sr_2Nb_2O_7at215℃
- High Pressure Raman Study of KNbO_3-KTaO_3 and KNbO_3-NaNbO_3 Mixed Crystals
- Ferroelectric Phase Transition in Rb_2SO_4-(NH_4)_2SO_4 and Cs_2SO_4-(NH_4)_2SO_4 Mixed Crystals
- Dislocations and Fine Lines in Rochelle Salt Crystal
- Domain Walls Caught in Sudares in Rochelle Salt Crystal
- Photoluminescene of KTaO_3 under Electric Field : Optical Properties of Condensed Matter
- The Photoluminescence Decay of the 2.2 eV-Emission Band in KTaO_3 Single Crystal
- Photoluminescence in KTaO_3 Single Crystal
- ESR Study of Low Temperature Phase Transitions in Se Doped LiKSO_4
- ESR Study of Ferroelectric Phase Transition in h-BaTiO_3
- High Pressure Raman Study of KNbO_3-KTaO_3 and KNbO_3-NaNbO_3 Mixed Crystals
- Refractive Indices of SbSI
- Twin Structure in Ferroelectric Sodium Nitrite
- ESR Study of Fe^ in Sr_2Nb_2O_7 at 250°C
- Photoconduction of Potassium Tantalate
- Growth and Dissolution Processes of GASH Crystal
- Photocurrent Oscillation in KTaO_3
- Refractive Indices and Absorption Coefficients of SbSBr
- The Potential Distribution in SbSI Single Crystal
- Dislocation Etch Pits on a- and b-Faces of GASH Crystal
- ESR Study of the Normal-Incommensurate Phase Transition in Sr_2Nb_2O_7
- ESR Study of Orthorhombic Fe^ Centers in Sr_2Ta_2O_7 and Sr_2Nb_2O_7
- Kinetics of ESR Lines and Photocurrent in KTaO_3 Doped with Ni
- Trap Depth of KTaO_3 Doped with Transition Metal Ions : APPLICATIONS AND FUNDAMENTALS
- Photocurrent-Voltage Characteristics of a Potassium Tantalate Single Crystal
- On Dipole Interaction and Electronic Polarizabilities of NaNO2 Crystal