Observation of recoil magnetization curves outside the major loop in Co, Fe, and Ni films

We report a peculiar magnetization reversal observed in magnetron-sputtered Co, Fe, and Ni films. We found that some recoil (minor) magnetization curves lie entirely and way outside the major loop, a phenomenon referred to here as a recoil-curve overshoot. The greatly enhanced recoil curve's re...

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Veröffentlicht in:	Physical review. B 2021-08, Vol.104 (5), p.1, Article 054436
Hauptverfasser:	Geshev, J., Garcia, W. J. S., Paes, V. Z. C., Azeredo, L. F. S., Dorneles, L. S., de Andrade, A. M. H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Cobalt Coercivity Ferromagnetism Iron Magnetization curves Magnetization reversal Nickel Recoil Remanence
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container_title	Physical review. B
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creator	Geshev, J. Garcia, W. J. S. Paes, V. Z. C. Azeredo, L. F. S. Dorneles, L. S. de Andrade, A. M. H.
description	We report a peculiar magnetization reversal observed in magnetron-sputtered Co, Fe, and Ni films. We found that some recoil (minor) magnetization curves lie entirely and way outside the major loop, a phenomenon referred to here as a recoil-curve overshoot. The greatly enhanced recoil curve's remanence and coercivity result in an up to 2.5-fold increase of loop's area. The model of pairs of exchange-coupled grains with misaligned anisotropy axes reproduces, in a very good agreement with the experiment, all key features of the recoil-curve overshoot as well as the kink that some major loops present before saturation. The disclosed features of the ferromagnetic hysteresis provide further insights into this important classical phenomenon.
doi_str_mv	10.1103/PhysRevB.104.054436
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B</jtitle><date>2021-08-01</date><risdate>2021</risdate><volume>104</volume><issue>5</issue><spage>1</spage><pages>1-</pages><artnum>054436</artnum><issn>2469-9950</issn><eissn>2469-9969</eissn><abstract>We report a peculiar magnetization reversal observed in magnetron-sputtered Co, Fe, and Ni films. We found that some recoil (minor) magnetization curves lie entirely and way outside the major loop, a phenomenon referred to here as a recoil-curve overshoot. The greatly enhanced recoil curve's remanence and coercivity result in an up to 2.5-fold increase of loop's area. The model of pairs of exchange-coupled grains with misaligned anisotropy axes reproduces, in a very good agreement with the experiment, all key features of the recoil-curve overshoot as well as the kink that some major loops present before saturation. 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subjects	Anisotropy Cobalt Coercivity Ferromagnetism Iron Magnetization curves Magnetization reversal Nickel Recoil Remanence
title	Observation of recoil magnetization curves outside the major loop in Co, Fe, and Ni films
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