Blocking phenomena in granular magnetic alloys through magnetization, Hall effect, and magnetoresistance experiments

Jc Denardin; Ab Pakhomov; Al Brandl; Lm Socolovsky; M. Knobel; Xx Zhang

doi:10.1063/1.1542678

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Blocking phenomena in granular magnetic alloys through magnetization, Hall effect, and magnetoresistance experiments

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Peer reviewed

Blocking phenomena in granular magnetic alloys through magnetization, Hall effect, and magnetoresistance experiments

Jc Denardin, Ab Pakhomov, Al Brandl, Lm Socolovsky, M. Knobel and Xx Zhang

Applied physics letters, Vol.82(5), pp.763-765

EUA

03/02/2003

DOI: https://doi.org/10.1063/1.1542678

Abstract

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Giant Magnetoresistance

Made available in DSpace on 2014-11-15T20:34:38Z (GMT). No. of bitstreams: 1 WOS000180687600034.pdf: 256183 bytes, checksum: c3fb2da0430eb340ddb4b5e94e41a17d (MD5) Previous issue date: 2003 Made available in DSpace on 2015-11-26T16:13:55Z (GMT). No. of bitstreams: 2 WOS000180687600034.pdf: 256183 bytes, checksum: c3fb2da0430eb340ddb4b5e94e41a17d (MD5) WOS000180687600034.pdf.txt: 18154 bytes, checksum: e4325bb42cbf5b808856c22e2459a345 (MD5) Previous issue date: 2003 Magnetization and magnetotransport were measured in CoxAg1-x granular composites as a function of temperature and applied magnetic field. A transition from blocked to superparamagnetic behavior with increasing temperatures can be observed in magnetization, giant magnetoresistance and the extraordinary Hall effect measurements. However, the blocking temperature determined from magnetotransport measurements is systematically lower than the one estimated from magnetic measurements. This is due to the selective magnetic scattering, which is enhanced for smaller particles, while the magnetization probes the whole particle size distribution. (C) 2003 American Institute of Physics. 82 5 763 765

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Title: Blocking phenomena in granular magnetic alloys through magnetization, Hall effect, and magnetoresistance experiments
Creators - without role: Jc Denardin - Universidade Estadual de Campinas (UNICAMP)
Ab Pakhomov - University of Washington
Al Brandl - Universidade Estadual de Campinas (UNICAMP)
Lm Socolovsky - Universidade Estadual de Campinas (UNICAMP)
M. Knobel - Universidade Estadual de Campinas (UNICAMP)
Xx Zhang - Hong Kong University of Science and Technology
Publication Details: Applied physics letters, Vol.82(5), pp.763-765
Publisher: EUA
Identifiers: 9941525808331
Academic Unit: King Abdullah University of Science & Technology
Language: English
Resource Type: Other