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Critical Analysis on the Structural and Magnetic Properties of Bulk and Nanocrystalline Cu-Fe-O
Joint Authors
Paul Joseph, D.
Selva Vennila, R.
Venkateswaran, C.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-03-27
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Nanocrystalline and bulk samples of “Fe”-doped CuO were prepared by coprecipitation and ceramic methods.
Structural and compositional analyses were performed using X-ray diffraction, SEM, and EDAX.
Traces of secondary phases such as CuFe2O4, Fe3O4, and α-Fe2O3 having peaks very close to that of the host CuO were identified from the Rietveld profile analysis and the SAED pattern of bulk and nanocrystalline Cu0.98Fe0.02O samples.
Vibrating Sample Magnetometer (VSM) measurements show hysteresis at 300 K for all the samples.
The ferrimagnetic Neel transition temperature (TN) was found to be around 465°C irrespective of the content of “Fe”, which is close to the TN value of cubic CuFe2O4.
High-pressure X-Ray diffraction studies were performed on 2% “Fe”-doped bulk CuO using synchrotron radiation.
From the absence of any strong new peaks at high pressure, it is evident that the secondary phases if present could be less than the level of detection.
Cu2O, which is diamagnetic by nature, was also doped with 1% of “Fe” and was found to show paramagnetic behavior in contrast to the “Fe” doped CuO.
Hence the possibility of intrinsic magnetization of “Fe”-doped CuO apart from the secondary phases is discussed based on the magnetization and charge state of “Fe” and the host into which it is substituted.
American Psychological Association (APA)
Paul Joseph, D.& Venkateswaran, C.& Selva Vennila, R.. 2011. Critical Analysis on the Structural and Magnetic Properties of Bulk and Nanocrystalline Cu-Fe-O. Advances in Materials Science and Engineering،Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-492849
Modern Language Association (MLA)
Paul Joseph, D.…[et al.]. Critical Analysis on the Structural and Magnetic Properties of Bulk and Nanocrystalline Cu-Fe-O. Advances in Materials Science and Engineering No. 2010 (2010), pp.1-14.
https://search.emarefa.net/detail/BIM-492849
American Medical Association (AMA)
Paul Joseph, D.& Venkateswaran, C.& Selva Vennila, R.. Critical Analysis on the Structural and Magnetic Properties of Bulk and Nanocrystalline Cu-Fe-O. Advances in Materials Science and Engineering. 2011. Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-492849
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-492849