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Mn2þ-induced room-temperature ferromagnetism and spin-glass behavior in hydrothermally grown Mn-doped ZnO nanorods
| Content Provider | CUSAT-Thesis |
|---|---|
| Author | Junaid, Bushiri M. Vinod, R. Sajan, P. Sreekumar, Rajappan Achary Vicente, Muñoz-sanjosé |
| Abstract | The magnetic properties of Mn-doped ZnO (ZnO:Mn) nanorodsgrown by hydrothermal process at a temperature of 200 8Cand a growth time of 3 h have been studied. The samples werecharacterized by using powder X-ray diffraction with Rietveldrefinement, scanning electron microscopy, energy-dispersiveX-ray analysis and SQUID magnetometry. Mn (3 wt%) and(5 wt%)-doped ZnO samples exhibit paramagnetic andferromagnetic behavior, respectively, at room temperature.The spin-glass behavior is observed from the samples withrespect to the decrease of temperature. At 10 K, both samplesexhibit a hysteresis loop with relatively low coercivity. Theroom-temperature ferromagnetism in 5 wt% Mn-doped ZnOnanorods is attributed to the increase in the specific area of grainboundaries, interaction between dopant Mn2þ ions substitutedat Zn2þ site and the interaction between Mn2þ ions and Zn2þions from the ZnO host lattice |
| File Format | |
| Language | English |
| Publisher | Wiley |
| Access Restriction | Open |
| Subject Keyword | diluted magnetic semiconductors manganese nanorods spin glasses SQUID ZnO |
| Content Type | Text |
| Resource Type | Article |
