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Media type:
E-Article
Title:
Structural and magnetic properties of epitaxial delafossite CuFeO2 thin films grown by pulsed laser deposition
Contributor:
Joshi, Toyanath;
Senty, Tess R.;
Trappen, Robbyn;
Zhou, Jinling;
Chen, Song;
Ferrari, Piero;
Borisov, Pavel;
Song, Xueyan;
Holcomb, Mikel B.;
Bristow, Alan D.;
Cabrera, Alejandro L.;
Lederman, David
Published:
AIP Publishing, 2015
Published in:
Journal of Applied Physics, 117 (2015) 1
Language:
English
DOI:
10.1063/1.4905424
ISSN:
1089-7550;
0021-8979
Origination:
Footnote:
Description:
Growth of pure phase delafossite CuFeO2 thin films on Al2O3 (00.1) substrates by pulsed laser deposition was systematically investigated as a function of growth temperature and oxygen pressure. X-ray diffraction, transmission electron microscopy, Raman scattering, and x-ray absorption spectroscopy confirmed the existence of the delafossite phase. Infrared reflectivity spectra determined a band edge at 1.15 eV, in agreement with the bulk delafossite data. Magnetization measurements on CuFeO2 films demonstrated a phase transition at TC ≈ 15 ± 1 K, which agrees with the first antiferromagnetic transition at 14 K in the bulk CuFeO2. Low temperature magnetic phase is best described by commensurate, weak ferromagnetic spin ordering along the c-axis.