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Title: Effect of capping material on interfacial ferromagnetism in FeRh thin films

Abstract

The role of the capping material in stabilizing a thin ferromagnetic layer at the interface between a FeRh film and cap in the nominally antiferromagnetic phase at room temperature was studied by x-ray magnetic circular dichroism in photoemission electron microscopy and polarized neutron reflectivity. These techniques were used to determine the presence or absence of interfacial ferromagnetism (FM) in films capped with different oxides and metals. Chemically stable oxide caps do not generate any interfacial FM while the effect of metallic caps depends on the element, showing that interfacial FM is due to metallic interdiffusion and the formation of a ternary alloy with a modified antiferromagnetic to ferromagnetic transition temperature.

Authors:
; ;  [1];  [2]; ; ;  [3]; ;  [4];  [2]
  1. Department of Physics, University of California, Davis, California 95616 (United States)
  2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  3. Helmholtz Zentrum-Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, D-12489 Berlin (Germany)
  4. NIST Center for Neutron Research, National Institute of Standard and Technology, Gaithersburg, MD 20899 (United States)
Publication Date:
OSTI Identifier:
22275593
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; ELECTRON MICROSCOPY; FERROMAGNETISM; INTERFACES; INTERMETALLIC COMPOUNDS; IRON; LAYERS; MAGNETIC CIRCULAR DICHROISM; OXIDES; PHOTOEMISSION; REFLECTIVITY; RHODIUM; TEMPERATURE RANGE 0273-0400 K; TERNARY ALLOY SYSTEMS; THIN FILMS; TRANSITION TEMPERATURE; X RADIATION

Citation Formats

Baldasseroni, C., E-mail: cbaldasseroni@berkeley.edu, Pálsson, G. K., Nemsak, S., Fadley, C. S., Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Bordel, C., Department of Physics, University of California, Berkeley, Berkeley, California 94720, GPM, UMR CNRS 6634, Université de Rouen, Av. de l'Université—BP12, 76801 St Etienne du Rouvray, Valencia, S., Unal, A. A., Kronast, F., Borchers, J. A., Maranville, B. B., Hellman, F., and Department of Physics, University of California, Berkeley, Berkeley, California 94720. Effect of capping material on interfacial ferromagnetism in FeRh thin films. United States: N. p., 2014. Web. doi:10.1063/1.4862961.
Baldasseroni, C., E-mail: cbaldasseroni@berkeley.edu, Pálsson, G. K., Nemsak, S., Fadley, C. S., Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Bordel, C., Department of Physics, University of California, Berkeley, Berkeley, California 94720, GPM, UMR CNRS 6634, Université de Rouen, Av. de l'Université—BP12, 76801 St Etienne du Rouvray, Valencia, S., Unal, A. A., Kronast, F., Borchers, J. A., Maranville, B. B., Hellman, F., & Department of Physics, University of California, Berkeley, Berkeley, California 94720. Effect of capping material on interfacial ferromagnetism in FeRh thin films. United States. https://doi.org/10.1063/1.4862961
Baldasseroni, C., E-mail: cbaldasseroni@berkeley.edu, Pálsson, G. K., Nemsak, S., Fadley, C. S., Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Bordel, C., Department of Physics, University of California, Berkeley, Berkeley, California 94720, GPM, UMR CNRS 6634, Université de Rouen, Av. de l'Université—BP12, 76801 St Etienne du Rouvray, Valencia, S., Unal, A. A., Kronast, F., Borchers, J. A., Maranville, B. B., Hellman, F., and Department of Physics, University of California, Berkeley, Berkeley, California 94720. 2014. "Effect of capping material on interfacial ferromagnetism in FeRh thin films". United States. https://doi.org/10.1063/1.4862961.
@article{osti_22275593,
title = {Effect of capping material on interfacial ferromagnetism in FeRh thin films},
author = {Baldasseroni, C., E-mail: cbaldasseroni@berkeley.edu and Pálsson, G. K. and Nemsak, S. and Fadley, C. S. and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Bordel, C. and Department of Physics, University of California, Berkeley, Berkeley, California 94720 and GPM, UMR CNRS 6634, Université de Rouen, Av. de l'Université—BP12, 76801 St Etienne du Rouvray and Valencia, S. and Unal, A. A. and Kronast, F. and Borchers, J. A. and Maranville, B. B. and Hellman, F. and Department of Physics, University of California, Berkeley, Berkeley, California 94720},
abstractNote = {The role of the capping material in stabilizing a thin ferromagnetic layer at the interface between a FeRh film and cap in the nominally antiferromagnetic phase at room temperature was studied by x-ray magnetic circular dichroism in photoemission electron microscopy and polarized neutron reflectivity. These techniques were used to determine the presence or absence of interfacial ferromagnetism (FM) in films capped with different oxides and metals. Chemically stable oxide caps do not generate any interfacial FM while the effect of metallic caps depends on the element, showing that interfacial FM is due to metallic interdiffusion and the formation of a ternary alloy with a modified antiferromagnetic to ferromagnetic transition temperature.},
doi = {10.1063/1.4862961},
url = {https://www.osti.gov/biblio/22275593}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 4,
volume = 115,
place = {United States},
year = {Tue Jan 28 00:00:00 EST 2014},
month = {Tue Jan 28 00:00:00 EST 2014}
}

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Works referencing / citing this record:

Colossal magnetic phase transition asymmetry in mesoscale FeRh stripes
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Inhomogeneous spatial distribution of the magnetic transition in an iron-rhodium thin film
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Tunneling anisotropic magnetoresistance driven by magnetic phase transition
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Topography dependence of the metamagnetic phase transition in FeRh thin films
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Direct Evidence of Anomalous Interfacial Magnetization in Metamagnetic Pd doped FeRh Thin Films
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Stable room-temperature ferromagnetic phase at the FeRh(100) surface
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Temperature controlled motion of an antiferromagnet- ferromagnet interface within a dopant-graded FeRh epilayer
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Effect of strain and thickness on the transition temperature of epitaxial FeRh thin-films
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Using structural phase transitions to enhance the coercivity of ferromagnetic films
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PNR study of the phase transition in FeRh thin films
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Magnetic order multilayering in FeRh thin films by He-Ion irradiation
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Temperature and field dependent magnetization in a sub- μ m patterned Co/FeRh film studied by resonant x-ray scattering
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Strain-tuning of the magnetocaloric transition temperature in model FeRh films
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Topography dependence of the metamagnetic phase transition in FeRh thin films
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Direct Evidence of Anomalous Interfacial Magnetization in Metamagnetic Pd doped FeRh Thin Films
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Stable room-temperature ferromagnetic phase at the FeRh(100) surface
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