Fluctuation in occupancy of Cu2+ ions in Zn- and Cd-substituted Cu-ferrites

M. Siddique; Rao Khan; M. Shafi

doi:10.1007/s10967-007-7048-8

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 277: Issue 3

Fluctuation in occupancy of Cu²⁺ ions in Zn- and Cd-substituted Cu-ferrites

Authors:

M. Siddique

M. Siddique PINSTECH Physics Division Pakistan Institute of Nuclear Science and Technology P.O. Nilore Islamabad Pakistan

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Rao Khan

Rao Khan PINSTECH Physics Division Pakistan Institute of Nuclear Science and Technology P.O. Nilore Islamabad Pakistan

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M. Shafi

M. Shafi PINSTECH Physics Division Pakistan Institute of Nuclear Science and Technology P.O. Nilore Islamabad Pakistan

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Pages:: 531–537

Online Publication Date:: 18 Apr 2008

Publication Date:: 01 Sep 2008

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-007-7048-8

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Abstract

Mössbauer effect technique has been used for the comparative study of Cu_1−xZn_xFe₂O₄ and Cu_1−xCd_xFe₂O₄ (_x = 0.0−1.0) ferrites. Both Zn²⁺ and Cd²⁺ cations are divalent, non-magnetic ions with different ionic radii. With the substitution of these non-magnetic cations the average internal magnetic field decreases and paramagnetic behavior is dominated at x = 0.7 in both series. It is observed that the occupancy of Cu²⁺ ions for tetrahedral site is not constant for all compositions but fluctuate between 8–15%. It is also found that Cu²⁺ ions have more preference for tetrahedral site in Cu-Zn system as compared to the Cu-Cd system. Zn²⁺ and Cd²⁺ both ions occupy tetrahedral site completely and form normal spinels for x = 1.0.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)