Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite

The electrical resistivity of Mg0.6Zn0.4Fe2O4 ferrite was measured as a function of temperature in the range 300-630 K. Two anomalies are observed in the resistivity curves for measurements during heating up. These anomalies are identified as a magnetic anomaly at the Neel temperature, TN = 598 K,...

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Main Authors:	Mustafa Hj. Abdullah, Ahmad Nazlim Yusoff
Format:	Article
Published:	Universiti Kebangsaan Malaysia 1996
Online Access:	http://journalarticle.ukm.my/3679/ http://journalarticle.ukm.my/3679/

id	ukm-3679
recordtype	eprints
spelling	ukm-36792012-03-29T04:20:47Z http://journalarticle.ukm.my/3679/ Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite Mustafa Hj. Abdullah, Ahmad Nazlim Yusoff, The electrical resistivity of Mg0.6Zn0.4Fe2O4 ferrite was measured as a function of temperature in the range 300-630 K. Two anomalies are observed in the resistivity curves for measurements during heating up. These anomalies are identified as a magnetic anomaly at the Neel temperature, TN = 598 K, while the other one at TOt = 445 K is discussed as due to the contribution of conduction from the tetrahedral sites. The anomaly at Tot was reduced in the measurements during recooling, while the anomaly at TN was disappeared completely during recooling and second cycle. These effects are discussed as due to the increase of Fe2+ ions at the octahedral sites as a result of cation redistribution at higher temperatures. A relatively small anomaly at Tot still can be observed during the second run. This is possible if the Fe2+ ions have a preference to be relocated at the tetrahedral sites at lower temperatures. Universiti Kebangsaan Malaysia 1996-03 Article PeerReviewed Mustafa Hj. Abdullah, and Ahmad Nazlim Yusoff, (1996) Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite. Sains Malaysiana, 25 (1). pp. 51-57. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol25num1_1996/vol25num1_96page51-57.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	The electrical resistivity of Mg0.6Zn0.4Fe2O4 ferrite was measured as a function of temperature in the range 300-630 K. Two anomalies are observed in the resistivity curves for measurements during heating up. These anomalies are identified as a magnetic anomaly at the Neel temperature, TN = 598 K, while the other one at TOt = 445 K is discussed as due to the contribution of conduction from the tetrahedral sites. The anomaly at Tot was reduced in the measurements during recooling, while the anomaly at TN was disappeared completely during recooling and second cycle. These effects are discussed as due to the increase of Fe2+ ions at the octahedral sites as a result of cation redistribution at higher temperatures. A relatively small anomaly at Tot still can be observed during the second run. This is possible if the Fe2+ ions have a preference to be relocated at the tetrahedral sites at lower temperatures.
format	Article
author	Mustafa Hj. Abdullah, Ahmad Nazlim Yusoff,
spellingShingle	Mustafa Hj. Abdullah, Ahmad Nazlim Yusoff, Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
author_facet	Mustafa Hj. Abdullah, Ahmad Nazlim Yusoff,
author_sort	Mustafa Hj. Abdullah,
title	Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
title_short	Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
title_full	Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
title_fullStr	Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
title_full_unstemmed	Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite
title_sort	anomalous temperature dependence of electrical resistivity in mg0.6zn0.4fe2o4 ferrite
publisher	Universiti Kebangsaan Malaysia
publishDate	1996
url	http://journalarticle.ukm.my/3679/ http://journalarticle.ukm.my/3679/
first_indexed	2023-09-18T19:39:27Z
last_indexed	2023-09-18T19:39:27Z
_version_	1777405491472760832

Anomalous temperature dependence of electrical resistivity in Mg0.6Zn0.4Fe2O4 ferrite

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