Compression behavior and phase transition of beta-si3n4 under high pressure
文献类型：期刊论文
| 作者 | Gong, Hong-xia1; Kou, Zi-li1; Fan, Cong1; Liang, Hao1; Wang, Qi-ming1; Zhang, Lei-lei1; Peng, Fang1; Yang, Ming1; Ni, Xiao-lin1; Liu, Jing2 |
| 刊名 | Chinese physics b
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 27期号:5页码:5 |
| 关键词 | Phase transition Bulk modulus Beta-si3n4 High pressure in situ x-ray diffraction |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/27/5/056101 |
| 通讯作者 | Kou, zi-li(kouzili@scu.edu.cn) |
| 英文摘要 | 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. |
| WOS关键词 | CUBIC SILICON-NITRIDE ; SINGLE-CRYSTAL ; GAMMA-SI3N4 ; ALPHA-SI3N4 ; HARDNESS ; MEDIA |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000432668200001 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177562 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Kou, Zi-li |
| 作者单位 | 1.Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Hong-xia,Kou, Zi-li,Fan, Cong,et al. Compression behavior and phase transition of beta-si3n4 under high pressure[J]. Chinese physics b,2018,27(5):5. |
| APA | Gong, Hong-xia.,Kou, Zi-li.,Fan, Cong.,Liang, Hao.,Wang, Qi-ming.,...&Liu, Jing.(2018).Compression behavior and phase transition of beta-si3n4 under high pressure.Chinese physics b,27(5),5. |
| MLA | Gong, Hong-xia,et al."Compression behavior and phase transition of beta-si3n4 under high pressure".Chinese physics b 27.5(2018):5. |
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来源：高能物理研究所
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