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Title: Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods

Abstract

Here we report the synthesis and characterization of Cu{sub 2}O nanorods doped with Mn, Ni and Co transition metal ions and the study of their magnetic properties. Synthesis of the nanorods was carried out by the modified polyol method. Powder X-ray diffraction patterns clearly showed them to be polycrystalline single phase material. They exhibited ferromagnetic behavior at room temperature, however no such behavior was observed for the reference undoped sample, which indicated that unintentionally introduced magnetic impurities were not responsible for the observed phenomenon. Ferromagnetic behavior was found to be dependent on the dopant concentration and increased consistently with its increment in the material. The total magnetic moments contribution was calculated for the dopant concentration and was found to be insignificant to account for the observed ferromagnetism, therefore it was suggested that ferromagnetism could have conjured up from the induced magnetic moment in the defects created as cation vacancies in the material. The presence of the defects was supported by the room temperature photoluminescence study which showed that intensity of the peaks was dependent on the dopant concentration and increased consistently with it. There was strong correlation between the magnitude of the photoluminescence peak and the observed ferromagnetic property inmore » the doped samples. -- Graphical Abstract: Room temperature ferromagnetism was observed in the Cu{sub 2}O nanorods doped with Mn, Ni and Co ions. The origin seems to be the defects of cation vacancies created by the dopant ions. Display Omitted« less

Authors:
 [1]
  1. Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India)
Publication Date:
OSTI Identifier:
21494167
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 183; Journal Issue: 12; Other Information: DOI: 10.1016/j.jssc.2010.09.040; PII: S0022-4596(10)00439-1; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CATIONS; COBALT IONS; COPPER OXIDES; DOPED MATERIALS; FERROMAGNETISM; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MANGANESE IONS; NANOSTRUCTURES; NICKEL IONS; PHOTOLUMINESCENCE; POLYCRYSTALS; SEMICONDUCTOR MATERIALS; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; VACANCIES; X-RAY DIFFRACTION; CHALCOGENIDES; CHARGED PARTICLES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; CRYSTALS; DIFFRACTION; EMISSION; IONS; LUMINESCENCE; MAGNETISM; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; PHYSICAL PROPERTIES; POINT DEFECTS; SCATTERING; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Citation Formats

Ahmed, Asar, and Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i. Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods. United States: N. p., 2010. Web. doi:10.1016/j.jssc.2010.09.040.
Ahmed, Asar, & Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i. Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods. United States. https://doi.org/10.1016/j.jssc.2010.09.040
Ahmed, Asar, and Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i. Wed . "Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods". United States. https://doi.org/10.1016/j.jssc.2010.09.040.
@article{osti_21494167,
title = {Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods},
author = {Ahmed, Asar and Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i},
abstractNote = {Here we report the synthesis and characterization of Cu{sub 2}O nanorods doped with Mn, Ni and Co transition metal ions and the study of their magnetic properties. Synthesis of the nanorods was carried out by the modified polyol method. Powder X-ray diffraction patterns clearly showed them to be polycrystalline single phase material. They exhibited ferromagnetic behavior at room temperature, however no such behavior was observed for the reference undoped sample, which indicated that unintentionally introduced magnetic impurities were not responsible for the observed phenomenon. Ferromagnetic behavior was found to be dependent on the dopant concentration and increased consistently with its increment in the material. The total magnetic moments contribution was calculated for the dopant concentration and was found to be insignificant to account for the observed ferromagnetism, therefore it was suggested that ferromagnetism could have conjured up from the induced magnetic moment in the defects created as cation vacancies in the material. The presence of the defects was supported by the room temperature photoluminescence study which showed that intensity of the peaks was dependent on the dopant concentration and increased consistently with it. There was strong correlation between the magnitude of the photoluminescence peak and the observed ferromagnetic property in the doped samples. -- Graphical Abstract: Room temperature ferromagnetism was observed in the Cu{sub 2}O nanorods doped with Mn, Ni and Co ions. The origin seems to be the defects of cation vacancies created by the dopant ions. Display Omitted},
doi = {10.1016/j.jssc.2010.09.040},
url = {https://www.osti.gov/biblio/21494167}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 12,
volume = 183,
place = {United States},
year = {2010},
month = {12}
}