Studies of the Crystal Structure of Ammonium Sulfate in Connection with Its Ferroelectric Phase Transition
スポンサーリンク
概要
- 論文の詳細を見る
The crvstal structure of ammonium sulfate is studied at -140, -90, -64and -53.5'C in the ferroelectric phase, and at -48.5 and -40'C in the parae-Iectric phase, by the use of the data collected by a four-circle diffractometer. Thedifference Fourier synthesis at -53.5'C shows a clear indication of the disorder-ing of the ammonium ton I but does not show the disordering of the sulfate ion.The configuration of the sulfate ion below T. can be derived from that above T.by a condensation of one of the librational B.. symmetry modes. The orderparameters of two kinds of ammonium ions are determined by the use of thereflection data below T.. From the temperature dependence of the displacementof the sulfate ion and order parameters of two kinds of ammonium ions below T.,a pseudospin-phonon coupled model is proposed.
- 社団法人日本物理学会の論文
- 1981-04-15
著者
関連論文
- A Structural Study of[N (CH_3)_4]_2HgCl_4 in Connection with Its Phase Transition
- NMR Study of Phase Transitions in Betaine Phosphite (CH_3)_3NCH_2COOH・H_2PO_3
- NMR Study of Phase Transitions in Betaine Phosphite (CH_3)_3NCH_2COOH・H_2PO_3
- Field Induced Ferroelectric Phase in RbLiSO_4
- X-Ray Scattering Study of High Temperature Phase Transition of Betaine Phosphate (Condensed Matter : Structure, Mechanical and Thermal Properties)
- Structural study on cubic-tetragonal transition of CH_3NH_3PbI_3
- X-Ray Study on Low-Temperature Phases in K_2ZnCl_4
- Discommensurations and Diffraction Patterns of Thiourea
- Phenomenological Theory on Incommensurate and Commensurate Phases and Electric Field-Temperature Phase Diagram in Thiourea
- X-Ray Diffraction Study of the Structures of Normal and Ferroelectric [N (CH_3)_4]_2ZnCl_4
- X-Ray Study on Phase Transitions in Ferroelectric Rb_2CoX_4(X=Cl or Br) Crystal
- Phenomenological Theory of the Phase Transitions in {N (CH_3)_4}_2CuBr_4
- X-Ray Study of the Phase Transitions in {N (CH_3)_4}_2ZnBr_4 and {N (CH_3)_4}_2CoBr_4
- X-Ray Diffraction Study on the Incommensurate-Commensurate Phase Transition in {N (CD_3)_4}_2CoCl_4
- X-Ray Study of Low Temperature Phases in {N (CH_3)_4}_2CoCl_4
- X-Ray Diffraction Study on the Crystal Structure and the Incommensurate-Commensurate Phase Transition in {N (CH_3)_4}_2CuBr_4
- Diffuse Scattering of Electrons by Defect in Crystal : II. Structure Analysis of the Guinier-Preston Zone in Cu-Be Alloy
- Diffuse Scattering of Electrons by Defect in Crystal. : I. General Formulation and Application to Guinier-Preston Zone
- Crystal Structure of the High Pressure Phase VI of Thiourea : Condensed Matter: Structure, etc.
- A Structural Study of [N (CH_3)_4]_2CdBr_4 in Connection with Its Phase Transition
- Refinement of the Crystal Structure of[N (CH_3)_4]_2ZnBr_4 in Connection with Its Phase Transition
- X-Ray Study on Incommensurate-Commensurate Phase Transition in {N (CD_3)_4}_2CuCl_4
- X-Ray Study on Incommensurate-Commensurate Phase Transition in {N (CD_3)_4}_2CuBr_4
- X-Ray Study of Phase Transition in Betaine Phosphite
- Phenomenological Theory of the Ferroelastic Phase Transition in LiCsSo_4
- Crystal Structure of the High Pressure Phase of RbHSO_4
- X-Ray Study of LiCsSO_4 in Connection with Its Ferroelastic Phase Transition
- X-Ray Study of Rb_2ZnBr_4 under High Pressure(Condensed Matter : Structure, Mechanical and Thermal Properties)
- Crystal Structure of the High-Pressure Phase in (CH_3)_2NH_2H_2PO_4 (Condensed Matter: Structure, Mechanical and Thermal Properties)
- Measurement of Monoclinic Angle in the Ferroelastic Phase of [N(CH_3)_4 ]_2XBr_4(X=Zn, Co, Mn, Cd)
- Spontaneous Strain of Mixed Crystal System[N (CH_3)_4]_2ZnBr_4-[P (CH_3)_4]_2ZnBr_4
- Al_3Li Superlattice in Al-4.5wt.% Li Alloy
- Phase Transition of Ammonium Sulfate
- X-Ray Diffuse Scattering of Paraelectric Ammonium Sulfate
- Studies of the Crystal Structure of Ammonium Sulfate in Connection with Its Ferroelectric Phase Transition
- X-Ray Deiffraction Study on the Incommensurate-Commensurate Phase Transitions in {N (CH_3)_4}_2CoCl_4
- X-Ray Study of Phase Transition in Betaine Phosphite