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Title: Tuning the magnetic properties of Zn1-xCoxO films

Abstract

We compare the magnetic properties of two types of Co-doped ZnO films grown on sapphire with distinct structural quality. SQUID magnetometry as well as element-specific synchrotron studies reveal pure paramagnetic behavior for the samples with the highest structural quality, whereas samples with reduced structural quality exhibit superparamagnetic blocking behavior. In this sample signatures of phase separation are detected by X-ray diffraction and X-ray linear dichroism which accounts for the superparamagnetic blocking.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1019221
Report Number(s):
PNNL-SA-71939
Journal ID: ISSN 0304-8853; JMMMDC; 35200; KC0201050; TRN: US201114%%696
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Magnetism and Magnetic Materials, 322(9-12):1232-1234
Additional Journal Information:
Journal Volume: 322; Journal Issue: 9-12; Journal ID: ISSN 0304-8853
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DICHROISM; MAGNETIC PROPERTIES; SAPPHIRE; SYNCHROTRONS; TUNING; X-RAY DIFFRACTION; Environmental Molecular Sciences Laboratory

Citation Formats

Ney, V, Ye, S, Kammermeier, T, Ollefs, K, Ney, A, Kaspar, Tiffany C, Chambers, Scott A, Wilhelm, F, and Rogalev, A. Tuning the magnetic properties of Zn1-xCoxO films. United States: N. p., 2010. Web. doi:10.1016/j.jmmm.2009.04.024.
Ney, V, Ye, S, Kammermeier, T, Ollefs, K, Ney, A, Kaspar, Tiffany C, Chambers, Scott A, Wilhelm, F, & Rogalev, A. Tuning the magnetic properties of Zn1-xCoxO films. United States. https://doi.org/10.1016/j.jmmm.2009.04.024
Ney, V, Ye, S, Kammermeier, T, Ollefs, K, Ney, A, Kaspar, Tiffany C, Chambers, Scott A, Wilhelm, F, and Rogalev, A. 2010. "Tuning the magnetic properties of Zn1-xCoxO films". United States. https://doi.org/10.1016/j.jmmm.2009.04.024.
@article{osti_1019221,
title = {Tuning the magnetic properties of Zn1-xCoxO films},
author = {Ney, V and Ye, S and Kammermeier, T and Ollefs, K and Ney, A and Kaspar, Tiffany C and Chambers, Scott A and Wilhelm, F and Rogalev, A},
abstractNote = {We compare the magnetic properties of two types of Co-doped ZnO films grown on sapphire with distinct structural quality. SQUID magnetometry as well as element-specific synchrotron studies reveal pure paramagnetic behavior for the samples with the highest structural quality, whereas samples with reduced structural quality exhibit superparamagnetic blocking behavior. In this sample signatures of phase separation are detected by X-ray diffraction and X-ray linear dichroism which accounts for the superparamagnetic blocking.},
doi = {10.1016/j.jmmm.2009.04.024},
url = {https://www.osti.gov/biblio/1019221}, journal = {Journal of Magnetism and Magnetic Materials, 322(9-12):1232-1234},
issn = {0304-8853},
number = 9-12,
volume = 322,
place = {United States},
year = {Tue Jun 01 00:00:00 EDT 2010},
month = {Tue Jun 01 00:00:00 EDT 2010}
}