Document Type
Article
Publication Date
12-1-2009
Abstract
This work reports strong correlations between the structural, magnetic and electronic properties of room temperature ferromagnets (RTFM) Sn1-xCoxO2 and Sn1-xCrxO2 for x = 0 to 0.1. The samples prepared by the sol-gel chemical method show RTFM for x < xL with the limiting concentration xL = 0.01 for Co doping and xL = 0.025 for Cr doping. As doping level x is increased from x = 0, the magnetic moment per ion, μ, increases and the lattice volume VL decreases up to x = xL. For x > xL, μ dramatically decreases toward zero and VL increases, the latter suggesting interstitial doping. Thermoelectric measurements showed that the samples are n-type for x < xL and p-type for x > xL, suggesting that the RTFM is intrinsic and it is electron mediated.
Publication Information
Van Komen, Chadd and Punnoose, Alex. (2009). "Transition from N-Type to P-Type Destroys Ferromagnetism in Semiconducting Sn1-XCoxO2 and Sn1-XCrxO2 Nanoparticles". Solid State Communications, 149(47-48), 2257-2259. http://dx.doi.org/10.1016/j.ssc.2009.08.039
Comments
NOTICE: This is the author’s version of a work accepted for publication by Elsevier. Changes resulting from the publishing process, including peer review, editing, corrections, structural formatting and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. The definitive version has been published in Solid State Communications, Volume 149, Issue 47/48, 2009. DOI: 10.1016/j.ssc.2009.08.039