Manganese Doped Cadmium Sulphide (CdS: Mn) quantum Particles: Topological, photoluminescence And Magnetic Studies

P. Venkatesu1*, K. Ravichandran2

1Department of Physics, N. B. K .R Institutes, Vidyanagar 524413, India
2Department of Nuclear Physics, University of Madras, Chennai 600025, India

Adv. Mater. Lett., 2013, 4 (3), pp 202-206

DOI: 10.5185/amlett.2012.7379

Publication Date (Web): Jan 21, 2013

E-mail: venkateshpudi@yahoo.co.in

Abstract


Nano-polycrystalline samples of cadmium sulphide doped with 0, 2, 4, 6, 8 and 10 atomic % of Mn were prepared by a template based chemical route. The presence of thiophenol as template on the surface of the samples has been detected with FTIR technique. Particle sizes of 15-50 nm range, hexagonal structure and polycrystalline nature of the samples have been identified through SEM and TEM techniques. Surface states in the band gap region of the samples confirmed by PL study also revealed that the size of the particles is in the nano range. The low temperature magnetization study suggested the 10 at.% Mn doped sample might be in a re-entrant-spin glass phase at 77 K.

Keywords

CdS: Mn, template, surface states, re-entrant-spin glass phase.

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