Zobrazeno 1 - 10
of 114
pro vyhledávání: '"I K Gopalakrishnan"'
Publikováno v:
Journal of Crystal Growth. 310:3251-3255
We report the effect of surfactant treatment on the structural and magnetic properties of Co-doped ZnO (Zn0.95Co0.05O) and Co-doped Li-co-doped ZnO nanoparticles (Zn0.85Co0.05Li0.10O), prepared by a low-temperature solid-state pyrolitic reaction. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5528164bcf31562cff9bda9f6e3f2591
https://doi.org/10.1016/j.jcrysgro.2008.03.038
https://doi.org/10.1016/j.jcrysgro.2008.03.038
Publikováno v:
Materials Letters. 62:1275-1278
Nanocrystalline cobalt monosulfide (Jaipurite) has been synthesized from corresponding cobalt xanthate complexes using solvothermal method. Thermolysis of cobalt tris ethylxanthate in ethylene glycol at 196 °C for 4 h yielded black particles of Jaip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e47d2dab408e4882f999e620c3a96fd
https://doi.org/10.1016/j.matlet.2007.08.068
https://doi.org/10.1016/j.matlet.2007.08.068
Autor:
O. D. Jayakumar, K. V. Rao, Ajayan Vinu, Ramakant Mahadeo Kadam, Avesh K. Tyagi, Anjana Asthana, I. K. Gopalakrishnan
Publikováno v:
Journal of Crystal Growth. 307:315-320
We report the synthesis of nanoparticles of Zn0.96Mn0.03Li0.01O by a low-temperature solid-state pyrolitic reaction, followed by a surfactant-assisted calcination at 400 °C. The X-ray diffraction and transmission electron microscopy analyses showed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ddc24d7b7f99f92391cfbf1ae66fdb7
https://doi.org/10.1016/j.jcrysgro.2007.06.027
https://doi.org/10.1016/j.jcrysgro.2007.06.027
Autor:
Darshana Y. Inamdar, I. K. Gopalakrishnan, Shailaja Mahamuni, S.K. Kulshreshtha, Sachin D. Kshirsagar
Publikováno v:
Solid State Communications. 143:457-460
Optical and magnetic properties of Co2+-doped ZnO nanocrystals were studied. Optical measurements confirm the incorporation of Co2+ in ZnO lattice with tetrahedral geometry. Optical absorption spectra also reveal the partial bleaching of the excitoni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd893fb05314874a7781c913d3e0cdf
https://doi.org/10.1016/j.ssc.2007.06.025
https://doi.org/10.1016/j.ssc.2007.06.025
Autor:
Chandran Sudakar, Onattu D. Jayakumar, Ramakant Mahadeo Kadam, I. K. Gopalakrishnan, Shailendra K. Kulshreshtha
Publikováno v:
Journal of Alloys and Compounds. 438:258-262
We report a surfactant assisted synthesis of Mn doped ZnO polycrystalline samples showing robust room temperature ferromagnetism as characterized by X-ray diffraction analysis, transmission electron microscopy, electron paramagnetic resonance and DC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba03033c32a18f27f34e5e3d66dbcf8e
https://doi.org/10.1016/j.jallcom.2006.08.030
https://doi.org/10.1016/j.jallcom.2006.08.030
Autor:
Ajayan Vinu, Onattu D. Jayakumar, Ramakant Mahadeo Kadam, Anjana Asthana, Avesh K. Tyagi, I. K. Gopalakrishnan
Publikováno v:
Journal of Crystal Growth. 300:358-363
Single phase Mn (2.5 at%) doped ZnO nanocrystalline samples were synthesized by reverse micelle method as characterized by Rietveld refinement analysis of X-ray diffraction data, high resolution transmission electron microscopy and selected area elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c07428c612cd12cca707fb76f9abea11
https://doi.org/10.1016/j.jcrysgro.2006.12.030
https://doi.org/10.1016/j.jcrysgro.2006.12.030
Publikováno v:
Journal of Crystal Growth. 294:432-436
We report the synthesis of rod shaped Mn (2.2 at%) doped ZnO single crystals using the surfactant AOT (sodium bis (2-ethylhexyl) sulpho succinate) assisted solid-state synthesis route. The X-ray diffraction and transmission electron microsopy analyse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a6efedf77f0b96c4b6b932560fcc93
https://doi.org/10.1016/j.jcrysgro.2006.06.036
https://doi.org/10.1016/j.jcrysgro.2006.06.036
Publikováno v:
Journal of Materials Science. 41:4706-4712
Fe- and Cu-doped ZnO of nominal compositions Zn0.95Fe0.05O and Zn0.94Fe0.05Cu0.01O were synthesized by a wet chemical route. X-ray diffraction analysis of the samples annealed at 575 K showed that they are single phase without any secondary phases. D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3df1cbd9a29b8b5cd9bff65e635bc05
https://doi.org/10.1007/s10853-006-0045-4
https://doi.org/10.1007/s10853-006-0045-4
Publikováno v:
Physica B: Condensed Matter. 381:194-198
Room temperature ferromagnetism was observed in polycrystalline samples of Mn doped ZnO synthesized by low temperature solid-state reaction of MnO2 and ZnO. Co-doping it with Li did not improve its ferromagnetic characteristics. By studying the produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae6395935e9a4bd810e5dadff46de29b
https://doi.org/10.1016/j.physb.2006.01.012
https://doi.org/10.1016/j.physb.2006.01.012
Publikováno v:
Journal of Crystal Growth. 280:436-441
Nanocrystalline Mn3O4 has been synthesized by ultrasonic irradiation of Mn acetate solution in water. Analysis of its X-ray diffraction data shows formation of a phase-pure compound with an average particle size of about 15 nm. DC magnetization measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::309dcbea39cd481384a2459141942b95
https://doi.org/10.1016/j.jcrysgro.2005.03.060
https://doi.org/10.1016/j.jcrysgro.2005.03.060