High-Pressure Behavior of Nano-Pt in Hydrogen Environment

被引：5

作者：

Tian, Can ^{[1
]}

Huang, Xiao-li ^{[1
]}

Huang, Yan-ping ^{[1
]}

Li, Xin ^{[1
]}

Zhou, Di ^{[1
]}

Wang, Xin ^{[1
]}

Cui, Tian ^{[1
]}

机构：

[1] Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Jilin, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2019年 / 36卷 / 10期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

HYDRIDES; SUPERCONDUCTIVITY; EMBRITTLEMENT; CRYSTAL;

D O I：

10.1088/0256-307X/36/10/106101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We choose nano-Pt in hydrogen environment to explore the size effect on the formation of metal hydrides. At 30GPa, a phase transition in the metal lattice from the cubic to hexagonal phase is observed characterized by a drastically increased volume per metal atom, indicating the formation of PtH-63/mmc. We find that nano-Pt could form PtH at a lower pressure than the bulk Pt due to its high specific surface and structure defects. The present work provides the possible route to new metal hydrides under mild conditions.

引用

页数：4

共 28 条

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

Akahama, Yuichi ;

Kawamura, Haruki .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (04)

[2] Hydrogen dominant metallic alloys: High temperature superconductors? [J].

Ashcroft, NW .

PHYSICAL REVIEW LETTERS, 2004, 92 (18) :187002-1

[3] Formation of transition metal hydrides at high pressures [J].

Degtyareva, Olga ;

Proctor, John E. ;

Guillaume, Christophe L. ;

Gregoryanz, Eugene ;

Hanfland, Michael .

SOLID STATE COMMUNICATIONS, 2009, 149 (39-40) :1583-1586

[4] Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system [J].

Drozdov, A. P. ;

Eremets, M. I. ;

Troyan, I. A. ;

Ksenofontov, V. ;

Shylin, S. I. .

NATURE, 2015, 525 (7567) :73-+

[5] Pressure-induced decomposition of solid hydrogen sulfide [J].

Duan, Defang ;

Huang, Xiaoli ;

Tian, Fubo ;

Li, Da ;

Yu, Hongyu ;

Liu, Yunxian ;

Ma, Yanbin ;

Liu, Bingbing ;

Cui, Tian .

PHYSICAL REVIEW B, 2015, 91 (18)

[6] Pressure-induced metallization of dense (H2S)2H2 with high-Tc superconductivity [J].

Duan, Defang ;

Liu, Yunxian ;

Tian, Fubo ;

Li, Da ;

Huang, Xiaoli ;

Zhao, Zhonglong ;

Yu, Hongyu ;

Liu, Bingbing ;

Tian, Wenjing ;

Cui, Tian .

SCIENTIFIC REPORTS, 2014, 4

[7] Crystal structure of the superconducting phase of sulfur hydride [J].

Einaga, Mari ;

Sakata, Masafumi ;

Ishikawa, Takahiro ;

Shimizu, Katsuya ;

Eremets, Mikhail I. ;

Drozdov, Alexander P. ;

Troyan, Ivan A. ;

Hirao, Naohisa ;

Ohishi, Yasuo .

NATURE PHYSICS, 2016, 12 (09) :835-838

[8] Superconductivity in hydrogen dominant materials: Silane [J].

Eremets, M. I. ;

Trojan, I. A. ;

Medvedev, S. A. ;

Tse, J. S. ;

Yao, Y. .

SCIENCE, 2008, 319 (5869) :1506-1509

[9] Synthesis and Stability of Lanthanum Superhydrides [J].

Geballe, Zachary M. ;

Liu, Hanyu ;

Mishra, Ajay K. ;

Ahart, Muhtar ;

Somayazulu, Maddury ;

Meng, Yue ;

Baldini, Maria ;

Hemley, Russell J. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2018, 57 (03) :688-692

[10] Pressure-induced hydrogen-dominant metallic state in aluminum hydride [J].

Goncharenko, Igor ;

Eremets, M. I. ;

Hanfland, M. ;

Tse, J. S. ;

Amboage, M. ;

Yao, Y. ;

Trojan, I. A. .

PHYSICAL REVIEW LETTERS, 2008, 100 (04)

← 1 2 3 →