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Titolo:
CRYSTAL-STRUCTURE AND THERMAL-EXPANSION OF CA2Y2SI2O9
Autore:
YAMANE H; NAGASAWA T; MURAKAMI Y; KAMATA T; SHINDO D; SHIMADA M; ENDO T;
Indirizzi:
TOHOKU UNIV,INST ADV MAT PROC,2-1-1 KATAHIRA SENDAI MIYAGI 9808577 JAPAN TOHOKU UNIV,GRAD SCH ENGN,DEPT CHEM MAT SENDAI MIYAGI 9808579 JAPAN
Titolo Testata:
Materials research bulletin
fascicolo: 6, volume: 33, anno: 1998,
pagine: 845 - 853
SICI:
0025-5408(1998)33:6<845:CATOC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASE-TRANSITION; Y4AL2O9;
Keywords:
OXIDES; ELECTRON DIFFRACTION; X-RAY DIFFRACTION; CRYSTAL STRUCTURE; THERMAL EXPANSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
H. Yamane et al., "CRYSTAL-STRUCTURE AND THERMAL-EXPANSION OF CA2Y2SI2O9", Materials research bulletin, 33(6), 1998, pp. 845-853

Abstract

The crystal structure of Ca2Y2Si2O9 was studied by X-ray and electrondiffraction. Statistical atomic site positions were determined in an orthorhombic cell, a = 10.453(3), b = 3.720(2), c = 10.290(2) Angstrom, space group Pnma. The local structure of Si2O7 silicate anions was illustrated from the refined atomic positions. The Ca2Y2Si2O9 structurecould be explained by locally disordered arrangement of Y4Al2O9 monoclinic structure. The linear thermal expansion coefficient of Ca2Y2Si2O9 ceramics measured by dilatometry was 9.3 X 10(-6) degrees C-1 from room temperature to 1500 degrees C. (C) 1998 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/04/20 alle ore 02:41:52