Structural and magnetic properties of Co-V nanoparticles

O. Tosun, I. Ruzybayev, F. M. Abel, B. Balamurugan, R. Skomski, D. J. Sellmyer, G. C. Hadjipanayis

Research output: Contribution to journalArticlepeer-review

Abstract

We have investigated the structural and magnetic properties of Co1-xVx nanoparticles (NPs) with composition x = 0.25 (stoichiometric) and 0.29 (under-stoichiometric) prepared by the cluster-beam deposition (CBD) technique. Our data shows that the as-made Co1-xVx NPs are a mixture of the high-temperature phase (HTP) and the low-temperature phase (LTP) of Co3V and the particles are superparamagnetic at room temperature (RT) with blocking temperatures (TB) of 90 and 137 K for x = 0.25 and 0.29, respectively. This behavior contrasts with the bulk which are paramagnetic down to 4.2 K. When the Co75V25 NPs are annealed at 573 K, they undergo a phase separation into a mixture of phases and become ferromagnetic at room temperature with Curie temperature (Tc) of 515 K.

Original languageEnglish (US)
Article number125144
JournalAIP Advances
Volume9
Issue number12
DOIs
StatePublished - Dec 1 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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