Direct evidence of anomalous interfacial magnetization in metamagnetic Pd doped FeRh thin films

Bennett, S. P.; Ambaye, H.; Lee, H.; LeClair, P.; Mankey, G. J.; Lauter, V.

doi:10.1038/srep09142

Title: Direct evidence of anomalous interfacial magnetization in metamagnetic Pd doped FeRh thin films

Journal Article · Mon Mar 16 00:00:00 EDT 2015 · Scientific Reports

DOI:https://doi.org/10.1038/srep09142· OSTI ID:1259694

Bennett, S. P. ^[1]; Ambaye, H. ^[2]; Lee, H. ^[3]; LeClair, P. ^[3]; Mankey, G. J. ^[3]; Lauter, V. ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Research Accelerator Division
Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy

Palladium doped iron rhodium is a magnetic material of significant interest for it's close to room temperature magnetostructural phase transition from antiferromagnetic (AF) to ferromagnetic (FM) ordering. Here we report on the peculiarities of the magnetization distribution in thin films of FeRh(Pd) probed by Polarized Neutron Reflectometry. Remarkably, we've found thin interfacial regions with strong magnetization that have unique thermomagnetic properties as compared to the rest of the system. These regions exist at the top and bottom interfaces of the films while the central regions behave similarly to the bulk with a clear AF-FM order transition. Further we explore the impact of an additional Pt interlayer introduced in the middle of the FeRh(Pd) film and reveal that it serves to replicate the strong interfacial magnetization found at the top and bottom interfaces. We conclude that these results are of great value both in understanding the fundamental physics of such an order transition, and in considering FeRh(Pd) for magnetic media and spintronics applications.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: FG02-08ER46499; AC05-00OR22725

OSTI ID:: 1259694

Alternate ID(s):: OSTI ID: 1261419

Journal Information:: Scientific Reports, Vol. 5; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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Inhomogeneous spatial distribution of the magnetic transition in an iron-rhodium thin film Gatel, C.; Warot-Fonrose, B.; Biziere, N. Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms15703	journal	June 2017
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Magnetic order multilayering in FeRh thin films by He-Ion irradiation Bennett, S. P.; Herklotz, A.; Cress, C. D. Materials Research Letters, Vol. 6, Issue 1 https://doi.org/10.1080/21663831.2017.1402098	journal	November 2017
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Stable room-temperature ferromagnetic phase at the FeRh(100) surface Pressacco, Federico; Uhlίř, Vojtěch; Gatti, Matteo Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep22383	journal	March 2016
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Magnetic order multilayering in FeRh thin films by He-Ion irradiation Bennett, S. P.; Herklotz, A.; Cress, C. D. Taylor & Francis https://doi.org/10.6084/m9.figshare.5602660.v2	text	January 2017
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Title: Direct evidence of anomalous interfacial magnetization in metamagnetic Pd doped FeRh thin films

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