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Effect of Structural Disorder on the Magnetic Properties of Melt-Spun Co<sub>3+x</sub>V alloys

POSTER

Abstract

We have investigated the structural and magnetic properties of melt-spun Co3+xV alloys for x = 0, 0.2, 0.4 and 0.6 in order to study the effect of structural disorder on the magnetic properties of Co-V alloys. Bulk Co3V exists in two phases: An ordered hexagonal (Al3Pu-type) low-temperature phase (LTP) and a cubic L12 (Cu3Au)-type high-temperature phase (HTP) [1, 2]. Both the LTP and HTP are paramagnetic down to 4.2 K. The as-spun samples have the HTP structure. However, when they are annealed at 1173 K, they transform into the LTP. Magnetic data suggest that the as-made ribbons are ferromagnetic with ordering temperatures of 10, 20, 30 and 75 K for x = 0, 0.2, 0.4 and 0.6, respectively. This behavior is attributed to a slight destruction of perfect order in the HTP and which can lead to an increase in the Co-Co exchange interaction. The magnetic properties of annealed samples are currently being measured and the results will be presented and discussed at the meeting.

[1] Y. Aoki, K. Asami, and M. Yamamoto, Phys. Stat. Sol. (a) 23, 167 (1974).
[2] Y. Aoki and M. Yamamoto, Phys. Stat. Sol. (a) 33, 625 (1976).

Presenters

  • Onur Tosun

    Physics and Astronomy, University of Delaware

Authors

  • Onur Tosun

    Physics and Astronomy, University of Delaware

  • Inci Ruzybayev

    Kinsley School of Engineering, Sciences and Technology, York College of Pennsylvania

  • Frank M Abel

    Physics and Astronomy, University of Delaware

  • Balamurugan Balasubramanian

    Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska, Physics and Astronomy, University of Nebraska, Lincoln, Department of Physics and Astronomy, NCMN, University of Nebraska - Lincoln 68588-0299, USA

  • Ralph Skomski

    Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska, University of Nebraska, Physics and Astronomy, University of Nebraska, Lincoln, Department of Physics and Astronomy, NCMN, University of Nebraska - Lincoln 68588-0299, USA

  • David Sellmyer

    Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska, Physics and Astronomy, University of Nebraska, Lincoln, Department of Physics and Astronomy, NCMN, University of Nebraska - Lincoln 68588-0299, USA

  • George C Hadjipanayis

    Univ of Delaware, Department of Physics and Astronomy, University of Delaware, Physics and Astronomy, University of Delaware