-
摘要: 在活塞-圆筒式高压装置上研究了BaCuO2.5在4.5 GPa内的p-V关系,给出了其状态方程、Grneisen参数0、零压体弹模量B0以及B0的压力导数B0。并在金刚石压砧装置(DAC)上测量了样品的电阻、电容随压力变化的关系,结果表明在0~20 GPa内没有发生相变。Abstract: p-V relationship for BaCuO2.5 at room temperature and in the pressure range up to 4.5 GPa was obtained using a piston-cylinder type device. Its equation of state, Grneisen parameter 0, bulk modulus B0, and the first order pressure derivative of B0 were also acquired. The resistance versus pressure (R-p), and capacitance versus pressure (C-p) relationships up to 20 GPa were simultaneously studied using DAC at room temperature. The results showed that no phase transition occurred under pressure up to 20 GPa.
-
Key words:
- high pressure /
- elastic coefficients /
- equation of state /
- resistance /
- capacitance
-
Arjomand M, Machin D. Oxide Chemistry. Part II. Ternary Oxides Containing Copper in Oxidation States-I, -II, -III, and-IV [J]. J Chem Soc, Dalton Trans, 1975, 11: 1061. Wu M M, Su Q, Hu G, et al. Preparation and Properties of BaCuO2.5 and Its Related Oxides [J]. Normal of Solid State Chem, 1994, 110: 389-392. Whal K, Klemm W. Uber Kaliumcuprat ( Ⅲ ) [J]. Z Anorg Allg Chem, 1952, 270: 69. Bringley J F, Scott B A, La Placa S J, et al. Synthesis of the Defect Perovskite Series LaCuO3 with Copper Valence Varying from 2+ to 3+ [J]. Nature, 1990, 347: 263. Jin C-Q, Adachi S, Yamauchi H, et al. A New Homologous Series of Compounds: Cu-12(n-1)n [A]. Yamafuji K, Morishita T. Advances in Superconductivity VII, Proceedings of the 7th International Symposium on Superconductivity (ISS'94) [C]. Hong Kong, 1994: 249-254. Bao Z X, Zhang Z T. A New Measure Technique of p-V Relationship [J]. Chinese Journal of High Pressure Physics, 1990, 4(2): 157. (in Chinese) 鲍忠兴, 张芝婷. 一种新的p-V关系测量技术 [J]. 高压物理学报, 1990, 4(2): 157. Bao Z X, Zhang Z T, Yu T N. The Metallization Transition of GaP, Si and Ge under High Pressure and Its Measure Technique [J]. Chin Sci Bull, 1984, 29(14): 846. (in Chinese) 鲍忠兴, 张芝婷, 俞汀南. GaP、Si和Ge在高压下的金属化相变及其测定方法 [J]. 科学通报, 1984, 29(14): 846. Bao Z X, Schmidt V H, Howell F L. Phase Transitions in KH2PO4 and RbH2PO4 to 14 GPa Observed by Capacitance Change in a Diamond Anvil Cell [J]. J Appl Phys, 1991, 70(11): 6804.
点击查看大图
计量
- 文章访问数: 7589
- HTML全文浏览量: 495
- PDF下载量: 773