Title:
Magnetic properties of bulk Zn₁₋ₓMnₓO and Zn₁₋ₓCoₓO single crystals
Magnetic properties of bulk Zn₁₋ₓMnₓO and Zn₁₋ₓCoₓO single crystals
| dc.contributor.author | Kane, Matthew Hartmann | en_US |
| dc.contributor.author | Shalini, K. | en_US |
| dc.contributor.author | Summers, C. J. | en_US |
| dc.contributor.author | Varatharajan, R. | en_US |
| dc.contributor.author | Nause, J. | en_US |
| dc.contributor.author | Vestal, Christy Riann | en_US |
| dc.contributor.author | Zhang, Z. John | en_US |
| dc.contributor.author | Ferguson, Ian T. | en_US |
| dc.contributor.corporatename | Georgia Institute of Technology. Center for Organic Photonics and Electronics | en_US |
| dc.contributor.corporatename | Georgia Institute of Technology. School of Electrical and Computer Engineering | en_US |
| dc.contributor.corporatename | Georgia Institute of Technology. School of Materials Science and Engineering | en_US |
| dc.contributor.corporatename | Cermet, Inc. | en_US |
| dc.contributor.corporatename | Georgia Institute of Technology. School of Chemistry and Biochemistry | en_US |
| dc.date.accessioned | 2013-04-09T20:08:38Z | |
| dc.date.available | 2013-04-09T20:08:38Z | |
| dc.date.issued | 2004-12 | |
| dc.description | © 2004 American Institute of Physics. The electronic version of this article is the complete one and can be found at: http://dx.doi.org/10.1063/1.1830084 | en_US |
| dc.description | DOI: 10.1063/1.1830084 | en_US |
| dc.description.abstract | Manganese and cobalt-doped ZnO have been produced using a modified melt-growth technique. X-ray diffraction measurements indicate that the samples are high-quality single crystals with ω−2θ full width at half maximum values of 78 arc sec for the undoped ZnO and 252 arc sec for Zn₁₋ₓMnₓO (x = 0.05). The lattice parameter of the Zn₁₋ₓMnₓO was observed to increase with Mn concentration. Transmission measurements showed systematic variations dominated by absorption from interatomic Mn²⁺ and Co²⁺ transitions. No evidence of diluted magnetic semiconductor mean-field ferromagnetic behavior was observed in any of these nominally noncarrier-doped samples. The magnetic properties instead showed paramagnetic behavior for Zn₁₋ₓMnₓO dominated by an antiferromagnetic Mn–Mn exchange interaction at low temperatures. Zn ₁₋ₓ CoₓO showed hysteresis that was attributed to superparamagnetic Co clusters embedded in a diamagnetic ZnO matrix. It has been shown that in the bulk single-crystal form, intrinsic and noncarrier-doped Zn₁₋ₓTMₓO is not ferromagnetic; thus creative processing and doping techniques are necessary to achieve practical ferromagnetism in these materials. | en_US |
| dc.identifier.citation | Kane, MH and Shalini, K and Summers, CJ and Varatharajan, R and Nause, J and Vestal, CR and Zhang, Z. John and Ferguson, Ian T., "Magnetic properties of bulk Zn₁₋ₓMnₓO and Zn₁₋ₓCoₓO single crystals," Journal of Applied Physics, 97, 2 (December 2004) | en_US |
| dc.identifier.doi | 10.1063/1.1830084 | |
| dc.identifier.issn | 0021-8979 | |
| dc.identifier.uri | http://hdl.handle.net/1853/46699 | |
| dc.publisher | Georgia Institute of Technology | en_US |
| dc.publisher.original | American Institute of Physics | en_US |
| dc.subject | Zinc compounds | en_US |
| dc.subject | Manganese compounds | en_US |
| dc.subject | Cobalt compounds | en_US |
| dc.subject | Semimagnetic semiconductors | en_US |
| dc.subject | II-VI semiconductors | en_US |
| dc.subject | Wide band gap semiconductors | en_US |
| dc.subject | Crystal growth from melt | en_US |
| dc.subject | X-ray diffraction | en_US |
| dc.subject | Lattice constants | en_US |
| dc.subject | Exchange interactions (electron) | en_US |
| dc.subject | Magnetic hysteresis | en_US |
| dc.subject | Magnetic susceptibility | en_US |
| dc.subject | Magnetic transitions | en_US |
| dc.subject | Ultraviolet spectra | en_US |
| dc.subject | Visible spectra | en_US |
| dc.title | Magnetic properties of bulk Zn₁₋ₓMnₓO and Zn₁₋ₓCoₓO single crystals | en_US |
| dc.type | Text | |
| dc.type.genre | Article | |
| dspace.entity.type | Publication | |
| local.contributor.author | Zhang, Z. John | |
| local.contributor.corporatename | Center for Organic Photonics and Electronics | |
| relation.isAuthorOfPublication | 13dfa2e5-da30-460d-bf02-94571a639123 | |
| relation.isOrgUnitOfPublication | 43f8dc5f-0678-4f07-b44a-edbf587c338f |
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