Relationship between the structural and magnetic properties of Co-doped SnO₂ nanoparticles
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics, 72(7):518-524
In this paper, we present the results of a detailed investigation of the structural, optical and magnetic properties of chemically synthesized pure and Co doped SnO₂ powders using x-ray diffraction (XRD), diffuse reflectance spectroscopy, Raman spectroscopy, x-ray photoelectron spectroscopy and magnetometry. For low doping concentrations of Co (≤ 1%), the SnO₂ lattice contracts and a ferromagnetic behavior is developed. Increasing the Co doping concentration to > 1% leads to a rapid expansion of the lattice and significant structural disorder evidenced by changes in the XRD and Raman spectra presumably due to additional interstitial incorporation of Co. This higher Co doping completely destroys the ferromagnetism. The striking similarity between the changes in the lattice parameters and the magnetic properties of Sn₁-xCoxO₂ indicates a structure-magnetic property relationship.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 859423
- Report Number(s):
- PNNL-SA-42656; 9995; KP1704020
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, 72(7):518-524, Journal Name: Physical Review. B, Condensed Matter and Materials Physics, 72(7):518-524 Journal Issue: 7 Vol. 72; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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