Fe–Pt thinfilmsweredepositedbyrfsputteringonanMgOsubstrateheatedatdifferenttemperatures to inducetheformationoftheperpendicularFe–PtL10 phase withadifferentgrainmorphologyonthe nanometerscale.AllfilmsarecharacterizedbyamazelikepatternofFePtnanograinswith interconnectedbases.MFMimagesandmagnetizationcurvesindicatethatallsampleshaveastrong perpendicularmagneticanisotropyarisingfrom(001)growth.Thetemperaturebehaviourofthe electricalresistanceindicatesthatapercolatingpathexistsforconductionelectronsinthemazelike pattern.Themagnetoresistancewasmeasuredasafunctionofmagneticfield(appliedlongitudinally) and temperatureintheranges 70 kOeoHo+70kOeand4KoTo150 K,respectively.Allsamples displayacomplexbehaviouroftheelectricalresistanceasafunctionofappliedfield.Theroleofthe differentmagnetoresistanceeffects(bothintrinsicandextrinsic)measuredintheseFePtthinfilmsis elucidated.
Competing magnetoresistance contributions in sputtered FePt thin films / P., Allia; F., Celegato; Coisson, Marco; Tiberto, PAOLA MARIA; Vinai, Franco; F., Albertini; F., Casoli; S., Fabbrici. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 322:14(2010), pp. 1898-1903. [10.1016/j.jmmm.2010.01.004]
Competing magnetoresistance contributions in sputtered FePt thin films
F. CELEGATO;COISSON, MARCO;TIBERTO, PAOLA MARIA;VINAI, FRANCO;
2010
Abstract
Fe–Pt thinfilmsweredepositedbyrfsputteringonanMgOsubstrateheatedatdifferenttemperatures to inducetheformationoftheperpendicularFe–PtL10 phase withadifferentgrainmorphologyonthe nanometerscale.AllfilmsarecharacterizedbyamazelikepatternofFePtnanograinswith interconnectedbases.MFMimagesandmagnetizationcurvesindicatethatallsampleshaveastrong perpendicularmagneticanisotropyarisingfrom(001)growth.Thetemperaturebehaviourofthe electricalresistanceindicatesthatapercolatingpathexistsforconductionelectronsinthemazelike pattern.Themagnetoresistancewasmeasuredasafunctionofmagneticfield(appliedlongitudinally) and temperatureintheranges 70 kOeoHo+70kOeand4KoTo150 K,respectively.Allsamples displayacomplexbehaviouroftheelectricalresistanceasafunctionofappliedfield.Theroleofthe differentmagnetoresistanceeffects(bothintrinsicandextrinsic)measuredintheseFePtthinfilmsis elucidated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
