Size correlated long and short range order of ternary Co2FeGa Heusler nanoparticles

Wang, C. H.; Guo, Y. Z.; Casper, F.; Balke, B.; Fecher, G. H.; Felser, C.; Hwu, Y.
September 2010
Applied Physics Letters;9/6/2010, Vol. 97 Issue 10, p103106
Academic Journal
The long and short range order of chemically prepared Co2FeGa Heusler nanoparticles with various sizes are determined by x-ray diffraction (XRD) and extended x-ray absorption fine structure (EXAFS) spectroscopy. Specifically, EXAFS fittings reveal the size dependent crystal structure and short range order of the Heusler type Co2FeGa nanoparticles. With decreasing particle size, the degree of L21 order in the nanoparticles decreases and the probability of B2 disorder increases simultaneously. The consequences of antisite disorder on the size correlated structure of Co2FeGa nanoparticles are also discussed.


Related Articles

  • Synthesis and characterization of ZnO:Co2+ nanoparticles. Volbers, N.; Zhou, H.; Knies, C.; Pfisterer, D.; Sann, J.; Hofmann, D.M.; Meyer, B.K. // Applied Physics A: Materials Science & Processing;Jul2007, Vol. 88 Issue 1, p153 

    This work investigates cobalt doped ZnO nanoparticles prepared by using wet chemical methods. The nanoparticles have a typical size of 3–8 nm. The electronic structure as well as the optical and magnetic properties of Co2+ have been characterized. X-ray diffraction spectra of the powder...

  • Green synthesized of silver nanoparticles using Canna indica leaf extract and its characterization. Nagati, Veera Babu; Nalvothula, Raju; Koyyati, Rama; Manthur Padigya, PratapRudra // International Journal of ChemTech Research;Jul/Aug2014, Vol. 6 Issue 4, p2271 

    In recent years a number of physical and chemical techniques were applied for the development of metal nanoparticles (MNPs). In present study, we synthesized silver nanoparticles from leafextract of Canna indica. The resulting silver nanoparticles were characterized by using UV -visible...

  • Structure and magnetic properties of iron oxide nanopowders. Lukashova, N.; Savchenko, A.; Yagodkin, Yu.; Muradova, A.; Yurtov, E. // Metal Science & Heat Treatment;Jan2013, Vol. 54 Issue 9/10, p550 

    Methods of x-ray diffraction analysis, transmission electron microscopy and Mössbauer spectroscopy are used to study iron oxide nanopowders of different dispersity obtained by chemical methods.

  • Strong luminescence enhancement of LiCaSiO:Eu phosphors by codoping with La. Zhong, Jianming; Zhao, Weiren; Lan, Licai; Wang, Jianqing // Journal of Materials Science: Materials in Electronics;Feb2014, Vol. 25 Issue 2, p736 

    La ions codoped LiCaSiO:Eu phosphors were synthesized through the solid state reaction method. Large increases in the emission could be achieved by adding La in the host. The optimum doping concentration expressed by the x value in LiCaSiO:0.01Eu, xLa was determined to be of 0.01. X-ray...

  • In situ time-resolved characterization of Au–CeO2 and AuOx–CeO2 catalysts during the water-gas shift reaction: Presence of Au and O vacancies in the active phase. Wang, X.; Rodriguez, J. A.; Hanson, J. C.; Pérez, M.; Evans, J. // Journal of Chemical Physics;12/8/2005, Vol. 123 Issue 22, p221101 

    Synchrotron-based in situ time-resolved x-ray diffraction and x-ray absorption spectroscopies were used to study the behavior of nanostructured {Au+AuOx}–CeO2 catalysts under the water-gas shift (WGS) reaction. At temperatures above 250 °C, a complete AuOx→Au transformation was...

  • Preparation and Properties of FeCo Nanoparticles. Zábranský, K.; David, B.; Pizúrová, N.; Schneeweiss, O.; Zborřil, R.; Masšláň, M. // AIP Conference Proceedings;7/13/2010, Vol. 1258 Issue 1, p102 

    Fe-Co nanoparticles were prepared from the binary Fe-Co oxalate. The formation of FeCo metallic phase begun at 290 °C as determined from the X-ray diffraction patterns recorded during heating of the oxalate sample in hydrogen atmosphere. The reduction finished at 500 °C by formation of bcc...

  • Ferrihydrite Modification by Boron Doping. Stevens, John G.; Khasanov, Airat M.; Grasette White, Melissa S. // Hyperfine Interactions;2003, Vol. 151/152 Issue 1-4, p283 

    Modification of ferrihydrite nanoparticles with boron is investigated using Mössbauer spectroscopy and powdered X-ray diffraction. These materials were heated to temperatures up to 600°C. The addition of the boron in the fabrication of ferrihydrite nanoparticles raises the transition...

  • A structural and Mössbauer study of Y3Fe5O12 nanoparticles prepared with high energy ball milling and subsequent sintering. Widatallah, H. M.; Johnson, C.; Al-Harthi, S. H.; Gismelseed, A. M.; Al-Rawas, A. D.; Stewart, S. J.; Elzain, M. E.; Al-Omari, I. A.; Yousif, A. A. // Hyperfine Interactions;2008, Vol. 183 Issue 1-3, p87 

    The influence of ball milling and subsequent sintering of a 3:5 molar mixture of Y2O3 and α-Fe2O3 on the formation of nanocrystalline Y3Fe5O12 (YIG) particles is studied. Pre-milling the mixture for 100 h lowers the onset temperature at which the material forms to 900°C which is 200°C...

  • Chemisorption on nickel nanoparticles of various shapes: Influence on magnetism. Cordente, N.; Amiens, C.; Chaudret, B.; Respaud, M.; Senocq, F.; Casanove, M.-J. // Journal of Applied Physics;11/15/2003, Vol. 94 Issue 10, p6358 

    Nanoparticles of nickel have been obtained in solution through reaction of an organometallic precursor, Ni(COD)[sub 2] (COD=cycloocta-1,5-diene), with dihydrogen, in the presence of various stabilizing agents. X-ray diffraction studies evidence a face-centered-cubic structure for all samples....


Read the Article


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

Try another library?
Sign out of this library

Other Topics