| 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)
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| 2018 | |
| Source Publication | CHINESE PHYSICS B
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| ISSN | 1674-1056 |
| EISSN | 1741-4199 |
| Volume | 27Issue:5Pages:56101 |
| Subtype | Article |
| Abstract | The 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. |
| Keyword | phase transition bulk modulus beta-Si3N4 high pressure in situ x-ray diffraction |
| DOI | 10.1088/1674-1056/27/5/056101 |
| WOS Keyword | CUBIC SILICON-NITRIDE ; SINGLE-CRYSTAL ; GAMMA-SI3N4 ; ALPHA-SI3N4 ; HARDNESS ; MEDIA |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000432668200001 |
| CSCD ID | CSCD:6265178 |
| EI Accession Number | 20182305285992 |
| ADS Bibcode | 2018ChPhB..27e6101G |
| Citation statistics |
Cited Times:1 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://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 Affilication | Institute 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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