Tuning the magnetic properties of Zn1-xCoxO films

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · Journal of Magnetism and Magnetic Materials, 322(9-12):1232-1234

DOI:https://doi.org/10.1016/j.jmmm.2009.04.024· OSTI ID:1019221

Ney, V; Ye, S; Kammermeier, T; Ollefs, K; Ney, A; Kaspar, Tiffany C; Chambers, Scott A; Wilhelm, F; Rogalev, A

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.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1019221
• Report Number(s): PNNL-SA-71939; JMMMDC; 35200; KC0201050; TRN: US201114%%696
• Journal Information: Journal of Magnetism and Magnetic Materials, 322(9-12):1232-1234, Vol. 322, Issue 9-12; ISSN 0304-8853
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DICHROISM
MAGNETIC PROPERTIES
SAPPHIRE
SYNCHROTRONS
TUNING
X-RAY DIFFRACTION
Environmental Molecular Sciences Laboratory