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Magnetic Properties of Proton Irradiated Fe2.7GeTe2 Bulk Crystals

Published online by Cambridge University Press:  19 June 2019

R. Olmos ,
A. Cosio ,
C. L. Saiz Open the ORCID record for C. L. Saiz [Opens in a new window] ,
L. M. Martinez ,
L. Shao ,
Q. Wang  and
S. R. Singamaneni
R. Olmos
Affiliation:
Department of Physics, The University of Texas at El Paso, El Paso, TX79968, USA
A. Cosio
Affiliation:
Department of Physics, The University of Texas at El Paso, El Paso, TX79968, USA
C. L. Saiz
Affiliation:
Department of Physics, The University of Texas at El Paso, El Paso, TX79968, USA
L. M. Martinez
Affiliation:
Department of Physics, The University of Texas at El Paso, El Paso, TX79968, USA
L. Shao
Affiliation:
Department of Nuclear Engineering, Texas A&M University, College Station, TX77845, USA
Q. Wang
Affiliation:
Department of Physics and Astronomy, West Virginia University, Morgantown, WV26506, USA
S. R. Singamaneni*
Affiliation:
Department of Physics, The University of Texas at El Paso, El Paso, TX79968, USA
*
*[email protected]
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Abstract

van der Waals (vdW) magnetic materials show promise in being the foundation for future spintronic technology. The magnetic behavior of Fe2.7GeTe2 (FGT), a vdW itinerant ferromagnet, was investigated before and after proton irradiation. Proton irradiation of the sample was carried out at a fluence of 1×1018 cm-2. The magnetization measurements revealed a small increase of saturation magnetization (Ms) of about 4% upon proton irradiation of the sample, in which, the magnetic field was applied parallel to the c-axis. X-ray photoelectron spectroscopy for pristine and irradiated FGT revealed a general decrease in intensity after irradiation for Ge and Te and an increase in peak intensity of unavoidable surface iron oxide. Furthermore, no noticeable change in the Curie temperature (TC =152 K) is observed in temperature dependent magnetization variation. This work signifies the importance of employing protons in tuning the magnetic properties of vdW materials.

Keywords

crystalFeferromagneticmagnetic properties
Type
Articles
Information
MRS Advances , Volume 4 , Issue 40: Quantum and Nanomaterials , 2019 , pp. 2185 - 2190
Copyright
Copyright © Materials Research Society 2019 

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