Coexistence of a metastable double hcp phase in bcc-fcc structure transition of Te under high pressure

被引：11

作者：

Akahama, Yuichi ^{[1
]}

Okawa, Naoki ^{[1
]}

Sugimoto, Toshiyuki ^{[1
]}

Fujihisa, Hiroshi ^{[2
]}

Hirao, Naoshisa ^{[3
]}

Ohishi, Yasuo ^{[3
]}

机构：

[1] Univ Hyogo, Grad Sch Mat Sci, Kamigori, Hyogo 6781297, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[3] Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo 6795198, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 02期

基金：

日本学术振兴会;

关键词：

X-RAY; CRYSTAL-STRUCTURE; TELLURIUM; SELENIUM;

D O I：

10.7567/JJAP.57.025601

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structural phase transitions of tellurium (Te) are investigated at pressures of up to 330 GPa at 298K using an X-ray powder diffraction technique. In the experiments, it was found that the high-pressure bcc phase (Te-V) transitioned to the fcc phase (Te-VI) at 99GPa, although a double hcp phase (dhcp) coexisted with the fcc phase. As the pressure was increased and decreased, the dhcp phase vanished at 255 and 100GPa, respectively. These results suggest that the dhcp phase is metastable at 298 K and the structure of the highest-pressure phase of Te is fcc. The present results provide important information regarding the high-pressure behavior of group-16 elements. (C) 2018 The Japan Society of Applied Physics

引用

页数：4

共 28 条

[1] PRESSURE-INDUCED SUPERCONDUCTIVITY AND PHASE-TRANSITION IN SELENIUM AND TELLURIUM [J].

AKAHAMA, Y ;

KOBAYASHI, M ;

KAWAMURA, H .

SOLID STATE COMMUNICATIONS, 1992, 84 (08) :803-806

[2] Pressure calibration of diamond anvil Raman gauge to 310 GPa [J].

Akahama, Yuichi ;

Kawamura, Haruki .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (04)

[3] CRYSTAL-STRUCTURE OF THE HIGH-PRESSURE PHASE OF TELLURIUM [J].

AOKI, K ;

SHIMOMURA, O ;

MINOMURA, S .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1980, 48 (02) :551-556

[4]

Bridgman W., 1952, P AM ACAD ARTS SCI, V81, P167, DOI [10.2307/20023677, DOI 10.2307/20023677]

[5] ELECTRICAL BEHAVIOR OF SE AND TE TO PRESSURES OF ABOUT 500 KBAR [J].

BUNDY, FP ;

DUNN, KJ .

JOURNAL OF CHEMICAL PHYSICS, 1979, 71 (04) :1550-1558

[6] Simple metals at high pressures: the Fermi sphere-Brillouin zone interaction model [J].

Degtyareva, V. F. .

PHYSICS-USPEKHI, 2006, 49 (04) :369-388

[7] High pressure phases and the structural phase transition of selenium [J].

Geshi, M ;

Oda, T ;

Hiwatari, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (09) :3141-3146

[8] Phase transitions in tellurium at high pressure and temperature [J].

Hejny, C. ;

Falconi, S. ;

Lundegaard, L. F. ;

McMahon, M. I. .

PHYSICAL REVIEW B, 2006, 74 (17)

[9] Complex crystal structures of Te-II and Se-III at high pressure [J].

Hejny, C ;

McMahon, MI .

PHYSICAL REVIEW B, 2004, 70 (18) :1-5

[10] Large structural modulations in incommensurate Te-III and Se-IV [J].

Hejny, C ;

McMahon, MI .

PHYSICAL REVIEW LETTERS, 2003, 91 (21)

← 1 2 3 →