Determination of the crystal structure of δ-MoN by neutron diffraction

Craig L. Bull; Paul F. McMillan; Emmanuel Soignard; Kurt Leinenweber

doi:10.1016/j.jssc.2003.11.033

Determination of the crystal structure of δ-MoN by neutron diffraction

Craig L. Bull, Paul F. McMillan, Emmanuel Soignard, Kurt Leinenweber

Molecular Sciences, School of (SMS)

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

94 Scopus citations

Abstract

We have determined the crystal structure of ordered hexagonal δ-MoN by use of powder X-ray diffraction and time-of-flight neutron diffraction. A disordered variety of the compound was first prepared by high-temperature ammonolysis of MoCl₅. This material has hexagonal symmetry with the space group P6₃mc with a=2.87(2) and c=2.81(1)Å. Upon high pressure annealing, the N-atoms become ordered and the unit cell doubles in size: a=5.73659(10) and c=5.61884(17)Å. The superconducting transition temperature increases from 4K in the disordered compound to 12.1K in the ordered phase.

Original language	English (US)
Pages (from-to)	1488-1492
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	177
Issue number	4-5
DOIs	https://doi.org/10.1016/j.jssc.2003.11.033
State	Published - Apr 1 2004

Keywords

Hardness
High pressure
MoN
Neutron diffraction
Structure determination

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.jssc.2003.11.033

Cite this

@article{a7bc172ae4ea40ca800c03303ff39a77,

title = "Determination of the crystal structure of δ-MoN by neutron diffraction",

abstract = "We have determined the crystal structure of ordered hexagonal δ-MoN by use of powder X-ray diffraction and time-of-flight neutron diffraction. A disordered variety of the compound was first prepared by high-temperature ammonolysis of MoCl5. This material has hexagonal symmetry with the space group P63mc with a=2.87(2) and c=2.81(1){\AA}. Upon high pressure annealing, the N-atoms become ordered and the unit cell doubles in size: a=5.73659(10) and c=5.61884(17){\AA}. The superconducting transition temperature increases from 4K in the disordered compound to 12.1K in the ordered phase.",

keywords = "Hardness, High pressure, MoN, Neutron diffraction, Structure determination",

author = "Bull, {Craig L.} and McMillan, {Paul F.} and Emmanuel Soignard and Kurt Leinenweber",

year = "2004",

month = apr,

day = "1",

doi = "10.1016/j.jssc.2003.11.033",

language = "English (US)",

volume = "177",

pages = "1488--1492",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "4-5",

}

TY - JOUR

T1 - Determination of the crystal structure of δ-MoN by neutron diffraction

AU - Bull, Craig L.

AU - McMillan, Paul F.

AU - Soignard, Emmanuel

AU - Leinenweber, Kurt

PY - 2004/4/1

Y1 - 2004/4/1

N2 - We have determined the crystal structure of ordered hexagonal δ-MoN by use of powder X-ray diffraction and time-of-flight neutron diffraction. A disordered variety of the compound was first prepared by high-temperature ammonolysis of MoCl5. This material has hexagonal symmetry with the space group P63mc with a=2.87(2) and c=2.81(1)Å. Upon high pressure annealing, the N-atoms become ordered and the unit cell doubles in size: a=5.73659(10) and c=5.61884(17)Å. The superconducting transition temperature increases from 4K in the disordered compound to 12.1K in the ordered phase.

AB - We have determined the crystal structure of ordered hexagonal δ-MoN by use of powder X-ray diffraction and time-of-flight neutron diffraction. A disordered variety of the compound was first prepared by high-temperature ammonolysis of MoCl5. This material has hexagonal symmetry with the space group P63mc with a=2.87(2) and c=2.81(1)Å. Upon high pressure annealing, the N-atoms become ordered and the unit cell doubles in size: a=5.73659(10) and c=5.61884(17)Å. The superconducting transition temperature increases from 4K in the disordered compound to 12.1K in the ordered phase.

KW - Hardness

KW - High pressure

KW - MoN

KW - Neutron diffraction

KW - Structure determination

UR - http://www.scopus.com/inward/record.url?scp=1642635137&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1642635137&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2003.11.033

DO - 10.1016/j.jssc.2003.11.033

M3 - Article

AN - SCOPUS:1642635137

SN - 0022-4596

VL - 177

SP - 1488

EP - 1492

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 4-5

ER -

Determination of the crystal structure of δ-MoN by neutron diffraction

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this