Phase diagram of the LiBO sub 2 -CdO system, phase transition, and structure of LiCdBO sub 3

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Journal of Solid State Chemistry; (USA)

OSTI ID:6108970

Lin, Wei; Qingzhen, Huang; Zicong, Zhou; Xiangde, Yin; Guiqin, Dai; Jingkui, Liang ^[1]

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1. Fujian Institute of Research on the Structure of Matter (China)

The phase diagram of the LiBO{sub 2}-CdO system was studied by means of x-ray diffraction and thermal analysis. An intermediate compound LiCdBO{sub 3} was formed by a peritectic reaction at 867 {plus minus} 3{degree}C in this system. LiCdBO{sub 3} exists in two polymorphic forms, the low temperature phase {alpha}-LiCdBO{sub 3} and the high temperature phase {beta}-LiCdBO{sub 3}. The phase transition is reversible at 690 {plus minus} 10{degree}C. The phase transition processes of the crystal and of the amorphous states were studied. An obvious hysteresis phenomena was observed in the phase transition process of the crystal state. {alpha}-LiCdBO{sub 3} belongs to the hexagonal P{anti 6} space group with cell parameters a = 8.307, c = 3.262 {angstrom}, Z = 3, D{sub 0} = 4.55 g/cm{sup 3}, D{sub x} = 4.551 g/cm{sup 3}; {beta}-LiCdBO{sub 3} belongs to monoclinic system, a = 10.509, b = 9.075, c = 10.862 {angstrom}, {beta} = 92.97{degree}, Z = 16, D{sub 0} = 4.57 g/cm{sup 3}, D{sub x} = 4.574 g/cm{sup 3}.

• OSTI ID: 6108970
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 89:1; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
BORON COMPOUNDS
BORON OXIDES
CADMIUM COMPOUNDS
CADMIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DIAGRAMS
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
EXPERIMENTAL DATA
HEXAGONAL LATTICES
INFORMATION
LITHIUM COMPOUNDS
LITHIUM OXIDES
MEASURING METHODS
MONOCLINIC LATTICES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SCATTERING
SPACE GROUPS
THERMAL ANALYSIS
X-RAY DIFFRACTION