Velocity and Stability of Condensed Polymorphic SiH$_{4}$: A High-Temperature High-Pressure Brillouin Investigation
Jiayu Wang , Qiang Zhou , Siyang Guo , Yanping Huang , Xiaoli Huang , Lu Wang** , Fangfei Li** , Tian Cui
State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
Abstract ：Silane (SiH$_{4}$) is a promising hydrogen-rich compound for pursing high temperature superconducting. Previous high pressure measurements of Raman, x-ray diffraction and theoretical studies on SiH$_{4}$ mainly focused on its polymorphic structures above 50 GPa, while the structure and the stability under lower pressure range are still unclear. Here we report an investigation of condensed SiH$_{4}$ by Brillouin scattering measurements at high temperature up to 407 K and high pressure up to 18 GPa. Brillouin scattering frequencies of fluid SiH$_{4}$ under compression are obtained under isothermal conditions of 300 K, 359 K and 407 K. The SiH$_{4}$ becomes unstable with increasing temperature and subsequently decomposes into silicon and H$_{2}$. We find that compression at room temperature induces two velocity anomalies corresponding to a fluid-solid state transition and a phase IV to phase V transition, respectively. Brillouin scattering spectra has been a powerful tool to investigate the fruitful phases and structure transitions in the hydrogen-rich compound under extreme conditions.
收稿日期: 2020-03-28
出版日期: 2020-05-26
:
62.50.-p
(High-pressure effects in solids and liquids)
62.60.+v
(Acoustical properties of liquids)
64.60.-i
(General studies of phase transitions)
78.35.+c
(Brillouin and Rayleigh scattering; other light scattering)
引用本文:
. [J]. 中国物理快报, 2020, 37(6): 66201-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/37/6/066201
或
https://cpl.iphy.ac.cn/CN/Y2020/V37/I6/66201
[1] Odden J O, Egeberg P K and Kjekshus A 2005 J. Non-Cryst. Solids 351 1317 [2] Ashcroft N W 2004 Phys. Rev. Lett. 92 187002 [3] Ashcroft N W 1968 Phys. Rev. Lett. 21 1748 [4] Yao Y, Tse J S, Ma Y et al 2007 Europhys. Lett. 78 37003 [5] Feng J, Grochala W, Jaron T et al 2006 Phys. Rev. Lett. 96 017006 [6] Pickard C J and Needs R J 2006 Phys. Rev. Lett. 97 045504 [7] Zhang H, Jin X, Lv Y et al 2015 Sci. Rep. 5 8845 [8] Becerra R and Walsh R 1992 J. Phys. Chem. 96 10856 [9] Chen X J, Struzhkin V V, Song Y et al 2008 Proc. Natl. Acad. Sci. USA 105 20 [10] Eremets M I, Trojan I A, Medvedev S A et al 2008 Science 319 1506 [11] Degtyareva O, Proctor J E, Guillaume C L et al 2009 Solid State Commun. 149 1583 [12] Strobel T A, Goncharov A F, Seagle C T et al 2011 Phys. Rev. B 83 144102 [13] Hanfland M, Proctor J E, Guillaume C L et al 2011 Phys. Rev. Lett. 106 095503 [14] Durajski A P and Szczȩśniak R 2014 Mod. Phys. Lett. B 28 1450052 [15] Cui W W, Shi J M, Liu H Y et al 2015 Sci. Rep. 5 13039 [16] Zhong X F, Liu F S, Cai L C et al 2014 Chin. Phys. Lett. 31 126201 [17] Shimizu H, Kitagawa T and Sasaki S 1993 Phys. Rev. B 47 11567 [18] Li M, Li F F, Gao W et al 2010 J. Chem. Phys. 133 044503 [19] Yen J and Nicol M 1992 J. Appl. Phys. 72 5535 [20] Ragan D D, Gustavsen R and Schiferl D 1992 J. Appl. Phys. 72 5539 [21] Polian A 2003 J. Raman Spectrosc. 34 633 [22] Sandercock J 1970 Opt. Commun. 2 73 [23] Li F F, Li M, Cui Q L et al 2009 J. Chem. Phys. 131 134502 [24] Whitfield C H, Brody E M and Bassett W A 1976 Rev. Sci. Instrum. 47 942 [25] Wang C H 1986 Mol. Phys. 58 497 [26] Mountain R D 1966 J. Res. Natl. Bur. Stand. Sect. A 70A 207 [27] Degtyareva O, Martinez Canales M, Bergara A et al 2007 Phys. Rev. B 76 064123
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
.
[11]
.
[12]
.
[13]
.
[14]
.
[15]
.
2020, Vol. 37 
