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Compression behavior and phase transition of beta-Si3N4 under high pressure
Gong, HX; Kou, ZL; Fan, C; Liang, H; Wang, QM; Zhang, LL; Peng, F; Yang, M; Ni, XL; Liu, J; Liu J(刘景)
2018
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
EISSN1741-4199
Volume27Issue:5Pages:56101
SubtypeArticle
AbstractThe compressibility and pressure-induced phase transition of beta-Si3N4 were investigated by using an angle dispersive x-ray diffraction technique in a diamond anvil cell at room temperature. Rietveld refinements of the x-ray powder diffraction data verified that the hexagonal structure (with space group P63/m, Z = 2 formulas per unit cell) beta-Si3N4 remained stable under high pressure up to 37 GPa. Upon increasing pressure, beta-Si3N4 transformed to delta-Si3N4 at about 41 GPa. The initial beta-Si3N4 was recovered as the pressure was released to ambient pressure, implying that the observed pressureinduced phase transformation was reversible. The pressure-volume data of beta-Si3N4 was fitted by the third-order BirchMurnaghan equation of state, which yielded a bulk modulus K-0 = 273(2) GPa with its pressure derivative K-0(') = 4 (fixed) and Kq = 278(2) GPa with K-0(') = 5. Furthermore, the compressibility of the unit cell axes (a and c-axes) for the beta-Si3N4 demonstrated an anisotropic property with increasing pressure.
Keywordphase transition bulk modulus beta-Si3N4 high pressure in situ x-ray diffraction
DOI10.1088/1674-1056/27/5/056101
WOS KeywordCUBIC SILICON-NITRIDE ; SINGLE-CRYSTAL ; GAMMA-SI3N4 ; ALPHA-SI3N4 ; HARDNESS ; MEDIA
Indexed BySCI ; EI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000432668200001
CSCD IDCSCD:6265178
EI Accession Number20182305285992
ADS Bibcode2018ChPhB..27e6101G
Citation statistics
Cited Times:1 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285928
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Gong, HX,Kou, ZL,Fan, C,et al. Compression behavior and phase transition of beta-Si3N4 under high pressure[J]. CHINESE PHYSICS B,2018,27(5):56101.
APA Gong, HX.,Kou, ZL.,Fan, C.,Liang, H.,Wang, QM.,...&刘景.(2018).Compression behavior and phase transition of beta-Si3N4 under high pressure.CHINESE PHYSICS B,27(5),56101.
MLA Gong, HX,et al."Compression behavior and phase transition of beta-Si3N4 under high pressure".CHINESE PHYSICS B 27.5(2018):56101.
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