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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/4558

Title: Mn2þ-induced room-temperature ferromagnetism and spin-glass behavior in hydrothermally grown Mn-doped ZnO nanorods
Authors: Junaid, Bushiri M
Vinod, R
Sajan, P
Sreekumar, Rajappan Achary
Vicente, Muñoz-Sanjosé
Keywords: diluted magnetic semiconductors
manganese
nanorods
spin glasses
SQUID
ZnO
Issue Date: 11-Feb-2014
Publisher: Wiley
Abstract: The magnetic properties of Mn-doped ZnO (ZnO:Mn) nanorods grown by hydrothermal process at a temperature of 200 8C and a growth time of 3 h have been studied. The samples were characterized by using powder X-ray diffraction with Rietveld refinement, scanning electron microscopy, energy-dispersive X-ray analysis and SQUID magnetometry. Mn (3 wt%) and (5 wt%)-doped ZnO samples exhibit paramagnetic and ferromagnetic behavior, respectively, at room temperature. The spin-glass behavior is observed from the samples with respect to the decrease of temperature. At 10 K, both samples exhibit a hysteresis loop with relatively low coercivity. The room-temperature ferromagnetism in 5 wt% Mn-doped ZnO nanorods is attributed to the increase in the specific area of grain boundaries, interaction between dopant Mn2þ ions substituted at Zn2þ site and the interaction between Mn2þ ions and Zn2þ ions from the ZnO host lattice
Description: Phys. Status Solidi A 211, No. 5, 1155–1161 (2014)
URI: http://dyuthi.cusat.ac.in/purl/4558
Appears in Collections:Dr.Junaid Bushiri M

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