Effects of temperature and atmosphere on the magnetism properties of Mn-doped ZnO

Chen, W.; Zhao, L. F.; Wang, Y. Q.; Miao, J. H.; Liu, S.; Xia, Z. C.; Yuan, S. L.
July 2005
Applied Physics Letters;7/25/2005, Vol. 87 Issue 4, p042507
Academic Journal
Magnetic properties of Mn-doped ZnO (Zn0.98Mn0.02O) bulk materials prepared by the solid-state reaction method were investigated by measuring magnetization as functions of temperature and magnetic field. The special feature of our sample preparation was the low-temperature processing. When high-temperature (T>700 °C) was used, secondary phase was found. The results indicate that the samples sintered in Ar gas show ferromagnetic behavior at room temperature, but it disappears in samples sintered in air. Even for ferromagnetic samples, the obtained saturation value of magnetization is much smaller than the theoretical value, suggesting the possibility that there is a strong antiferromagnetic exchange coupling in this kind of compound.


Related Articles

  • Effect of temperature on the structural properties of Mn substituted ZnO nanoparticles. Mote, V. D.; Huse, V. R.; Purushotham, Y.; Jadhav, K. M.; Dole, B. N.; Shah, S. S. // AIP Conference Proceedings;7/16/2011, Vol. 1349 Issue 1, p323 

    We report the effect of thermal treatment on the structural properties of Mn-doped ZnO nanoparticles prepared by coprecipitation method. X-ray diffraction analysis of these samples shows wurtzite (hexagonal) structure of ZnO (space group p63mc). The lattice parameters of the system were...

  • Structural and Optical Properties: Mn Doped Nano ZnO Synthesized by Mechanochemical Synthesis. Sabri, Nurul Syahidah; Talari, Mahesh Kumar; Yahya, A. K. // AIP Conference Proceedings;7/7/2010, Vol. 1250 Issue 1, p436 

    Manganese doped ZnO nanoparticles were synthesized by mechanochemical processing in a high energy ball mill (Zn1-xMnxO, x = 0, 0.02, 0.04, 0.06, 0.08, 0.1). ZnO nano particles were synthesized by milling corresponding chemical precursors in a planetary ball mill for different periods of time....

  • Ferromagnetism in Co-doped ZnO films grown by molecular beam epitaxy: magnetic, electrical and microstructural studies. Strelchuk, V. V.; Bryksa, V. P.; Avramenko, K. A.; Lytvyn, P. M.; Valakh, M. Ya.; Pashchenko, V. O.; Bludov, O. M.; Deparis, C.; Morhain, C.; Tronc, P. // Semiconductor Physics, Quantum Electronics & Optoelectronics;2011, Vol. 14 Issue 1, p31 

    We studied structural, optical and magnetic properties of high-quality 5 and 15% Co-doped ZnO films grown by plasma-assisted molecular beam epitaxy (MBE) on (0001)-sapphire substrates. Magnetic force microscopy (MFM) and magnetic measurements with a SQUID magnetometer show clear ferromagnetic...

  • Influence of Mn doping on structural and optical properties of ZnO nano thin films synthesized by sol-gel technique. Merzouk, H.; Chelouche, A.; Saoudi, S.; Djouadi, D.; Aksas, A. // Applied Physics A: Materials Science & Processing;Dec2012, Vol. 109 Issue 4, p841 

    Undoped and Mn-doped ZnO samples with different percentages of Mn content (1, 5 and 10 at%) were synthesized by a dip-coating sol-gel method. We have studied the structural, chemical and optical properties of the samples by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and...

  • Sintering Effect on Structural, Optical and Unusual Magnetic Behaviour in ZnCoO-Based DMS Materials. Pazhanivelu, V; Blessington Selvadurai, A; Murugaraj, R // Journal of Superconductivity & Novel Magnetism;Aug2015, Vol. 28 Issue 8, p2575 

    In this paper, the sinteringinduced unusual optical and magnetic behaviour in Co doped ZnO nanoparticles is reported. Codoped ZnO (ZnCoO) powders were prepared using a co-precipitation method and sintered at three different temperatures (350, 500 and 650 °C). The single crystalline phase and...

  • Effect Of Doping Concentrations On The Properties Of Mn-doped ZnO Nanostructured Thin Films. Abd Rashid, Affa Rozana; Shaari, Sahbudin; Menon, P. Susthitha // AIP Conference Proceedings;12/27/2010, Vol. 1325 Issue 1, p99 

    Zn1-xMnxO thin films with different doping concentration (x = 0, 0.02, 0.04, 0.06, 0.08) were synthesized by sol gel method using the spin coating technique. Zn1-xMnxO thin films are prepared using 2-methoxyethanol solution of zinc acetate dehydrate and manganese acetate tetrahydrate. The...

  • Enhancement of the photocatalytic activity of modified ZnO nanoparticles with manganese additive. Shahmoradi, Behzad; Namratha, K.; Byrappa, K.; Soga, K.; Ananda, S.; Somashekar, R. // Research on Chemical Intermediates;Apr2011, Vol. 37 Issue 2-5, p329 

    ZnO nanoparticles were synthesized under mild hydrothermal conditions ( T = 150 °C, P = autogenous, experimental duration = 18 h). Manganese was added as an additive to ZnO nanoparticles in different molar percentages. In situ surface-modification was successfully carried out for these...

  • Effects of As and Mn doping on microstructure and electrical conduction in ZnO films. Lord, K.; Williams, T. M.; Hunter, D.; Zhang, K.; Dadson, J.; Pradhan, A. K. // Applied Physics Letters;6/26/2006, Vol. 88 Issue 26, p262105 

    We report the synthesis of epitaxial As-doped ZnO and Mn-doped (ZnAs)O films by pulsed-laser deposition technique. The grain size in (ZnAs)O films decreases from 40 to less than 10 nm upon Mn doping, illustrating that Mn acts as a potential catalyst to create nanosize grains. Temperature...

  • Mechanical milling-induced room-temperature ferromagnetic phase in MnO2–ZnO system. Tanaka, Katsuhisa; Fukui, Kazuya; Murai, Shunsuke; Fujita, Koji // Applied Physics Letters;7/31/2006, Vol. 89 Issue 5, p052501 

    Mechanical milling of a mixture of powders composed of 2 mol % MnO2 and 98 mol % ZnO leads to a ferromagnetic phase with Curie temperature above 300 K. The magnetic field dependence of magnetization manifests a residual magnetization of 2.84×10-4 emu/g and a coercive force of 76 Oe at 300 K;...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics