Vanadium Diboride (VB2) Synthesized at High Pressure: Elastic, Mechanical, Electronic, and Magnetic Properties and Thermal Stability

Pei Wang; Ravhi Kumar; Esakki Muthu Sankaran; Xintong Qi; Xinyu Zhang; Dmitry Popov; Andrew L. Cornelius; Baosheng Li; Yusheng Zhao; Liping Wang

doi:10.1021/acs.inorgchem.7b02550

Vanadium Diboride (VB₂) Synthesized at High Pressure: Elastic, Mechanical, Electronic, and Magnetic Properties and Thermal Stability

Pei Wang
, Ravhi Kumar
, Esakki Muthu Sankaran
, Xintong Qi
, Xinyu Zhang
, Dmitry Popov
, Andrew L. Cornelius
, Baosheng Li
, Yusheng Zhao
, Liping Wang

Geosciences

University of Nevada, Las Vegas
Stony Brook University
Yanshan University
Carnegie Institution of Washington

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Vanadium diboride (VB₂) with an AlB₂-type structure has been synthesized at 8 GPa and 1700 K in a D-DIA-type multianvil apparatus. The obtained bulk modulus is B₀ = 262(2) GPa with fixed B′ = 4.0 for VB₂ via high-pressure X-ray diffraction measurements. Meanwhile, VB₂ has also been demonstrated to possess a high Vickers hardness of 27.2 ± 1.5 GPa, a high thermal stability of 1410 K in air, among the highest for transition-metal borides, and an extremely low resistivity value (41 μω cm) at room temperature. Results from first-principles calculations regarding the mechanical and electronic properties of VB₂ are largely consistent with the experimental observations and further suggest that VB₂ possesses simultaneously the properties of a hard and refractory ceramic and those of an excellent electric conductor.

Original language	English
Pages (from-to)	1096-1105
Number of pages	10
Journal	Inorganic Chemistry
Volume	57
Issue number	3
DOIs	https://doi.org/10.1021/acs.inorgchem.7b02550
State	Published - Feb 5 2018

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10.1021/acs.inorgchem.7b02550

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title = "Vanadium Diboride (VB2) Synthesized at High Pressure: Elastic, Mechanical, Electronic, and Magnetic Properties and Thermal Stability",

abstract = "Vanadium diboride (VB2) with an AlB2-type structure has been synthesized at 8 GPa and 1700 K in a D-DIA-type multianvil apparatus. The obtained bulk modulus is B0 = 262(2) GPa with fixed B′ = 4.0 for VB2 via high-pressure X-ray diffraction measurements. Meanwhile, VB2 has also been demonstrated to possess a high Vickers hardness of 27.2 ± 1.5 GPa, a high thermal stability of 1410 K in air, among the highest for transition-metal borides, and an extremely low resistivity value (41 μω cm) at room temperature. Results from first-principles calculations regarding the mechanical and electronic properties of VB2 are largely consistent with the experimental observations and further suggest that VB2 possesses simultaneously the properties of a hard and refractory ceramic and those of an excellent electric conductor.",

author = "Pei Wang and Ravhi Kumar and Sankaran, \{Esakki Muthu\} and Xintong Qi and Xinyu Zhang and Dmitry Popov and Cornelius, \{Andrew L.\} and Baosheng Li and Yusheng Zhao and Liping Wang",

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doi = "10.1021/acs.inorgchem.7b02550",

language = "English",

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TY - JOUR

T1 - Vanadium Diboride (VB2) Synthesized at High Pressure

T2 - Elastic, Mechanical, Electronic, and Magnetic Properties and Thermal Stability

AU - Wang, Pei

AU - Kumar, Ravhi

AU - Sankaran, Esakki Muthu

AU - Qi, Xintong

AU - Zhang, Xinyu

AU - Popov, Dmitry

AU - Cornelius, Andrew L.

AU - Li, Baosheng

AU - Zhao, Yusheng

AU - Wang, Liping

PY - 2018/2/5

Y1 - 2018/2/5

N2 - Vanadium diboride (VB2) with an AlB2-type structure has been synthesized at 8 GPa and 1700 K in a D-DIA-type multianvil apparatus. The obtained bulk modulus is B0 = 262(2) GPa with fixed B′ = 4.0 for VB2 via high-pressure X-ray diffraction measurements. Meanwhile, VB2 has also been demonstrated to possess a high Vickers hardness of 27.2 ± 1.5 GPa, a high thermal stability of 1410 K in air, among the highest for transition-metal borides, and an extremely low resistivity value (41 μω cm) at room temperature. Results from first-principles calculations regarding the mechanical and electronic properties of VB2 are largely consistent with the experimental observations and further suggest that VB2 possesses simultaneously the properties of a hard and refractory ceramic and those of an excellent electric conductor.

AB - Vanadium diboride (VB2) with an AlB2-type structure has been synthesized at 8 GPa and 1700 K in a D-DIA-type multianvil apparatus. The obtained bulk modulus is B0 = 262(2) GPa with fixed B′ = 4.0 for VB2 via high-pressure X-ray diffraction measurements. Meanwhile, VB2 has also been demonstrated to possess a high Vickers hardness of 27.2 ± 1.5 GPa, a high thermal stability of 1410 K in air, among the highest for transition-metal borides, and an extremely low resistivity value (41 μω cm) at room temperature. Results from first-principles calculations regarding the mechanical and electronic properties of VB2 are largely consistent with the experimental observations and further suggest that VB2 possesses simultaneously the properties of a hard and refractory ceramic and those of an excellent electric conductor.

UR - https://www.scopus.com/pages/publications/85041641351

U2 - 10.1021/acs.inorgchem.7b02550

DO - 10.1021/acs.inorgchem.7b02550

M3 - Article

C2 - 29360374

AN - SCOPUS:85041641351

SN - 0020-1669

VL - 57

SP - 1096

EP - 1105

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 3

ER -

Vanadium Diboride (VB₂) Synthesized at High Pressure: Elastic, Mechanical, Electronic, and Magnetic Properties and Thermal Stability

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