Sol–Gel-Derived ZnO:Mn Nanocrystals: Study of Structural, Raman, and Optical Properties

Structural, Raman, and optical properties of sol–gel derived Zn1–xMnxO (0≤x ≤ 0.06) nanoparticles have been investigated. The crystallite structure, morphology, and size estimation have been performed by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). To study the crystalline quality, structural disorder and defects in the host lattice, we have employed Raman Spectroscopy. The wurtzite structure and formation of tetrahedral coordination of the oxygen ions surrounding the zinc ions has been confirmed by FTIR analysis. Optical properties have been studied by UV–vis and PL spectroscopy. UV–vis measurements show that the band gap is increased with increasing Mn concentration. This may be attributed to the orbital hybridizations that are prevailed throughout the whole range of Mn doping. Variation of resistivity with temperature shows that thermally activated conduction (Arrhenius) mechanism is valid in the high-temperature region (T > 250 K), whereas Mott’s variable-range...

[1]  K. M. Jadhav,et al.  Structural studies of Mn doped ZnO nanoparticles , 2011 .

[2]  D. Bodas,et al.  Structural, magnetic and optical studies of (Zn0.90Co0.05Ni0.05O) DMS , 2010 .

[3]  H. D. Yang,et al.  Signature of ferroelectricity in magnetically ordered Mo-doped CoFe 2 O 4 , 2010 .

[4]  R. Elilarassi,et al.  Structural, optical and magnetic properties of nanoparticles of ZnO:Ni—DMS prepared by sol–gel method , 2010 .

[5]  J. Chu,et al.  Synthesis of Mn-doped ZnO diluted magnetic semiconductors in the presence of ethyl acetoacetate under solvothermal conditions , 2010 .

[6]  A. Tanaka,et al.  Surface- and bulk-sensitive x-ray absorption study of the valence states of Mn and Co ions in Zn1−2xMnxCoxO nanoparticles , 2010 .

[7]  S. Buddhudu,et al.  Synthesis and magnetic behaviour of Mn:ZnO nanocrystalline powders. , 2010, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

[8]  A. K. Tyagi,et al.  Chemical Synthesis and Structural and Magnetic Properties of Dispersible Cobalt- and Nickel-Doped ZnO Nanocrystals , 2010 .

[9]  Prashant K. Sharma,et al.  Doping dependent room-temperature ferromagnetism and structural properties of dilute magnetic semiconductor ZnO:Cu2+ nanorods , 2009 .

[10]  G. Chandrasekaran,et al.  Synthesis, strucutral and optical properties of vanadium doped zinc oxide nanograins , 2009 .

[11]  S. Buddhudu,et al.  Structural and photoluminescence analysis of Zn1 − xMnxO nanocrystalline powders , 2009 .

[12]  Zhidong Zhang,et al.  Room-temperature ferromagnetism and optical properties of Zn1−xMnxO nanoparticles , 2009 .

[13]  Albert Fert,et al.  Origin, development, and future of spintronics (Nobel Lecture). , 2008, Angewandte Chemie.

[14]  X. Cao,et al.  Solution-Based Doping of Manganese into Colloidal ZnO Nanorods , 2008 .

[15]  Michael J. Callahan,et al.  Temperature dependence of Raman scattering in ZnO , 2007 .

[16]  G. P. Das,et al.  Ferromagnetism in Fe-doped ZnO nanocrystals: Experiment and theory , 2007 .

[17]  Kanwal Preet Bhatti,et al.  Observation of room temperature ferromagnetism in nanocrystalline ZnO : Co system , 2006 .

[18]  S. Chambers.  Ferromagnetism in doped thin-film oxide and nitride semiconductors and dielectrics , 2006 .

[19]  Y. Chen,et al.  Structure and magnetic properties of Zn1−xCoxO single-crystalline nanorods synthesized by a wet chemical method , 2006 .

[20]  M. Goiran,et al.  Magnetic anisotropy of Co2+ as signature of intrinsic ferromagnetism in ZnO:Co. , 2006, Physical review letters.

[21]  O. D. Jayakumar,et al.  The structural and magnetization studies of Co-doped ZnO co-doped with Cu: Synthesized by co-precipitation method , 2005 .

[22]  S. Bhat,et al.  Tuning the bandgap of ZnO by substitution with Mn2+, Co2+ and Ni2+ , 2005 .

[23]  C. Cong,et al.  Synthesis, structure and ferromagnetic properties of Mn-doped ZnO nanoparticles , 2005 .

[24]  Jiying Zhang,et al.  Structural and Optical Properties of Uniform ZnO Nanosheets , 2005 .

[25]  B. Satpati,et al.  Synthesis and Characterization of Mn-Doped ZnO Nanocrystals. , 2004, The journal of physical chemistry. B.

[26]  Mathias Schubert,et al.  Raman scattering in ZnO thin films doped with Fe, Sb, Al, Ga, and Li , 2003 .

[27]  Dapeng Yu,et al.  Optical properties of the ZnO nanotubes synthesized via vapor phase growth , 2003 .

[28]  S. Lau,et al.  Photoluminescence study of ZnO films prepared by thermal oxidation of Zn metallic films in air. , 2003 .

[29]  M. L. Curri,et al.  ZnO Nanocrystals by a Non-hydrolytic Route: Synthesis and Characterization , 2003 .

[30]  David P. Norton,et al.  Wide band gap ferromagnetic semiconductors and oxides , 2003 .

[31]  Jae‐Hyun Kim,et al.  Magnetic properties of epitaxially grown semiconducting Zn1−xCoxO thin films by pulsed laser deposition , 2002 .

[32]  Martin Strassburg,et al.  Nitrogen-related local vibrational modes in ZnO:N , 2002 .

[33]  Stuart A. Wolf,et al.  Spintronics : A Spin-Based Electronics Vision for the Future , 2009 .

[34]  Hideomi Koinuma,et al.  High throughput fabrication of transition-metal-doped epitaxial ZnO thin films: A series of oxide-diluted magnetic semiconductors and their properties , 2001 .

[35]  Hiroshi Katayama-Yoshida,et al.  Material Design for Transparent Ferromagnets with ZnO-Based Magnetic Semiconductors , 2000 .

[36]  H. Ohno,et al.  Zener model description of ferromagnetism in zinc-blende magnetic semiconductors , 2000, Science.

[37]  D. K. Young,et al.  Electrical spin injection in a ferromagnetic semiconductor heterostructure , 1999, Nature.

[38]  B. K. Sarkar,et al.  A photoacoustic spectroscopic investigation of the optical energy gap in Zn–Mn–Se type dilute magnetic semiconductors , 1999 .

[39]  Manuel Cardona,et al.  Resonant Raman scattering in ZnO , 1977 .

[40]  Nevill Mott,et al.  Conduction in glasses containing transition metal ions , 1968 .

[41]  B. Tell,et al.  Raman Effect in Zinc Oxide , 1966 .

[42]  A. L. Patterson.  The Diffraction of X-Rays by Small Crystalline Particles , 1939 .