skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanoparticles of superconducting {gamma}-Mo{sub 2}N and {delta}-MoN

Abstract

We have been able to prepare nanoparticles ({approx}4 nm diameter) of cubic {gamma}-Mo{sub 2}N by a simple procedure involving the reaction of MoCl{sub 5} with urea at 873 K. The nanoparticles show a superconducting transition around 6.5 K. The {gamma}-Mo{sub 2}N nanoparticles are readily transformed to nanoparticles of {delta}-MoN with a slightly larger diameter on heating in a NH{sub 3} atmosphere at 573 K. Phase-pure {delta}-MoN obtained by this means shows a superconducting transition around 5 K. - Graphical abstract: TEM image of the {gamma}-Mo{sub 2}N particles with the inset showing the resistivity of the sample as a function of temperature.

Authors:
 [1];  [1];  [2]
  1. Chemistry and Physics of Materials Unit, DST Unit on Nanoscience and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India)
  2. Chemistry and Physics of Materials Unit, DST Unit on Nanoscience and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India), E-mail: cnrrao@jncasr.ac.in
Publication Date:
OSTI Identifier:
21015649
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2006.10.020; PII: S0022-4596(06)00557-3; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMMONIA; MOLYBDENUM CHLORIDES; MOLYBDENUM NITRIDES; NANOSTRUCTURES; PARTICLES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0400-1000 K; TRANSMISSION ELECTRON MICROSCOPY; UREA

Citation Formats

Gomathi, A., Sundaresan, A., and Rao, C.N.R.. Nanoparticles of superconducting {gamma}-Mo{sub 2}N and {delta}-MoN. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.10.020.
Gomathi, A., Sundaresan, A., & Rao, C.N.R.. Nanoparticles of superconducting {gamma}-Mo{sub 2}N and {delta}-MoN. United States. doi:10.1016/j.jssc.2006.10.020.
Gomathi, A., Sundaresan, A., and Rao, C.N.R.. Mon . "Nanoparticles of superconducting {gamma}-Mo{sub 2}N and {delta}-MoN". United States. doi:10.1016/j.jssc.2006.10.020.
@article{osti_21015649,
title = {Nanoparticles of superconducting {gamma}-Mo{sub 2}N and {delta}-MoN},
author = {Gomathi, A. and Sundaresan, A. and Rao, C.N.R.},
abstractNote = {We have been able to prepare nanoparticles ({approx}4 nm diameter) of cubic {gamma}-Mo{sub 2}N by a simple procedure involving the reaction of MoCl{sub 5} with urea at 873 K. The nanoparticles show a superconducting transition around 6.5 K. The {gamma}-Mo{sub 2}N nanoparticles are readily transformed to nanoparticles of {delta}-MoN with a slightly larger diameter on heating in a NH{sub 3} atmosphere at 573 K. Phase-pure {delta}-MoN obtained by this means shows a superconducting transition around 5 K. - Graphical abstract: TEM image of the {gamma}-Mo{sub 2}N particles with the inset showing the resistivity of the sample as a function of temperature.},
doi = {10.1016/j.jssc.2006.10.020},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 180,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}