ICCAS OpenIR
XRD and Raman Studies on the Ordering/Disordering of Ba(Mg1/3Ta2/3)O-3
Wang, Chun-Hai1; Jing, Xi-Ping1; Wang, Lu2; Lu, Jing2
2009-07-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume92Issue:7Pages:1547-1551
AbstractThe samples of complex perovskite Ba(Mg1/3Ta2/3)O-3 ( BMT) were synthesized at various sintering temperatures and the Xray diffraction (XRD) patterns and Raman spectra of the samples were collected. Both the structure refinements using the XRD data and the Raman spectra show that the samples sintered above 1500 degrees C with high pellet relative density (>95%) take almost-perfect B-site-ordered structure; while the samples sintered below 1400 degrees C with low pellet relative density (<70%) take the more disordered structure at B-sites. The vibrational modes of 1:2 ordered BMT [P<(3)over bar>m1(164)] were obtained and illustrated by using first-principle calculations. With the assistance of the calculation results, Raman peaks of BMT were assigned as A(1g)(1) (107 cm(-1)), A(1g)(2) (212 cm(-1)), A(1g)(3) (433 cm(-1)), A(1g)(4) (798 cm(-1)), and E-g(1) (104 cm(-1)), E-g(2) (160 cm(-1)), E-g(3) (264 cm(-1)), E-g(4) (386 cm(-1)), E-g(5) (576 cm(-1)). The highly ordered BMT sample at B-site shows longer phonon lifetime and weaker coupling among phonons than the disordered BMT, which probably are the intrinsic reasons for the highly ordered BMT sample to have the low dielectric loss.
DOI10.1111/j.1551-2916.2009.03067.x
Indexed BySCI
Language英语
WOS IDWOS:000267426500028
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66364
Collection中国科学院化学研究所
Corresponding AuthorJing, Xi-Ping
Affiliation1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Peking Univ, State Key Lab Artificial Microstruct & Mesoscop P, Sch Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wang, Chun-Hai,Jing, Xi-Ping,Wang, Lu,et al. XRD and Raman Studies on the Ordering/Disordering of Ba(Mg1/3Ta2/3)O-3[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2009,92(7):1547-1551.
APA Wang, Chun-Hai,Jing, Xi-Ping,Wang, Lu,&Lu, Jing.(2009).XRD and Raman Studies on the Ordering/Disordering of Ba(Mg1/3Ta2/3)O-3.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,92(7),1547-1551.
MLA Wang, Chun-Hai,et al."XRD and Raman Studies on the Ordering/Disordering of Ba(Mg1/3Ta2/3)O-3".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92.7(2009):1547-1551.
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