Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 12, Issue 12, Pages 9003-9006Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2012.6706
Keywords
Magnetic Semiconductor Nanoparticle; Random Dope of Transition Metal; Control of Crystal Structure; Composition Effect
Categories
Funding
- Grants-in-Aid for Scientific Research [24750121] Funding Source: KAKEN
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In this study, the random dope of Mn into CdS nanoparticles in zincblende phase has been carried out under the mild reaction condition. The resulting nanoparticles were characterized by energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), X-ray diffractometer (XRD), UV-Vis spectrometer, PL spectrometer, and SQUID. EDX showed that the compositions of Mn doped CdS nanoparticles were readily controlled. TEM showed the particle sizes were not significantly affected by the compositions, retaining to be ca. 3 nm with a narrow size distribution. UV-Vis and PL spectra of the resulting nanoparticles showed the intra-Mn level may be affected by the quantum size effect. SQUID measurement showed that the resulting nanoparticles showed diamagnetism, paramagnetism and superparamagnetism dependent on Mn content.
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