Magnetic study of particle distribution in granular AuCo

N. Peleg; S. Shtrikman; G. Gorodetsky; I. Felner

doi:10.1016/S0304-8853(98)00337-0

Magnetic study of particle distribution in granular AuCo

N. Peleg, S. Shtrikman, G. Gorodetsky^*, I. Felner

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Measurements of field-cooled magnetization (FCM) and reversed-field-cooled magnetization (RFCM) in granular Au_0.82Co_0.18 films were carried out at various applied magnetic fields. It is shown that temperature derivatives of the difference between FCM and RFCM provide information on size distribution of the superparamagnetic Co particles. The field dependence of the blocking temperatures, obtained by the same measurements, is found to deviate from existing theories.

Original language	English
Pages (from-to)	349-353
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	191
Issue number	3
DOIs	https://doi.org/10.1016/S0304-8853(98)00337-0
State	Published - 1999

Keywords

Fine particles
Giant magnetoresistance
Remanent magnetization
Superparamagnetism
Thin films

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10.1016/S0304-8853(98)00337-0

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abstract = "Measurements of field-cooled magnetization (FCM) and reversed-field-cooled magnetization (RFCM) in granular Au0.82Co0.18 films were carried out at various applied magnetic fields. It is shown that temperature derivatives of the difference between FCM and RFCM provide information on size distribution of the superparamagnetic Co particles. The field dependence of the blocking temperatures, obtained by the same measurements, is found to deviate from existing theories.",

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AB - Measurements of field-cooled magnetization (FCM) and reversed-field-cooled magnetization (RFCM) in granular Au0.82Co0.18 films were carried out at various applied magnetic fields. It is shown that temperature derivatives of the difference between FCM and RFCM provide information on size distribution of the superparamagnetic Co particles. The field dependence of the blocking temperatures, obtained by the same measurements, is found to deviate from existing theories.

KW - Fine particles

KW - Giant magnetoresistance

KW - Remanent magnetization

KW - Superparamagnetism

KW - Thin films

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Magnetic study of particle distribution in granular AuCo

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