High-Pressure Synthesis and Phase Stability of Nickel Pernitride

被引：21

作者：

Niwa, Ken ^{[1
]}

Fukui, Riku ^{[1
]}

Terabe, Toshiki ^{[2
]}

Kawada, Takuya ^{[1
]}

Kato, Daiki ^{[3
]}

Sasaki, Takuya ^{[1
]}

Soda, Kazuo ^{[1
,4
]}

Hasegawa, Masashi ^{[1
]}

机构：

[1] Nagoya Univ, Dept Mat Phys, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Dept Crystalline Mat Sci, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[3] Nagoya Univ, Dept Quantum Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[4] Nagoya Univ, Synchrotron Radiat Res Ctr, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2019年 / 2019卷 / 33期

关键词：

Nickel; Pernitrides; Phase transitions; High-pressure chemistry; DIAMOND-ANVIL CELL; CRYSTAL-STRUCTURE; METAL NITRIDES; MARCASITE; PLATINUM; PYRITE; IRON;

D O I：

10.1002/ejic.201900489

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The high-pressure nitridation of nickel was investigated using a laser-heated diamond-anvil cell. Marcasite-type nickel pernitride (NiN2) was synthesized at approximately 40 GPa, and it transformed into the tetragonal phase at approximately 3 GPa along with the decompression. The structural refinement of marcasite-type NiN2 at 36 GPa gives an N-N distance of 1.24 angstrom. The first-principles calculation reveals that the marcasite-type NiN2 is a narrow-gap semiconductor, and high-pressure in-situ X-ray diffraction measurements revealed a zero-pressure bulk modulus of 172(6) GPa. The axial ratios (c/a and b/a) of marcasite-type NiN2 are close to the upper-limit values of marcasite-type structures, which suggests that the stability of marcasite-type transition metal pernitrides strongly depends on the d-electrons.

引用

页码：3753 / 3757

页数：5

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