Magnetic State in Nanostructured ZnFe$_2$O$_4$ at Low Temperature

ORAL

Abstract

Nanostructured ZnFe$_2$O$_4$ prepared by high-energy ball milling process for 4 h, showed spontaneous magnetization below 460K,while bulk ZnFe$_2$O$_4$ has antiferromagnetic state below 10K. Magnetic state in this ball-milled ZnFe$_2$O$_4$ at low temperature was investigated by observing the behavior of spectrum of zero-field nuclear magnetic resonance with applying external magnetic field and varying temperature. In addition to verifying ferrimagnetic state that is naturally expected, we found the co-existence of antiferromagnetic long range ordered state in octahedral site. Canted state appeared only in magnetization of octahedral site that consists of the ferrimagnetic state.

Authors

  • Jeong Hyun Shim

  • Soonchil Lee

    • Department of Physics, Korea Advanded Institute of Science and Technology

  • Jung Hye Park

  • S.-J. Han

  • Y.H. Jeong

    • Department of Physics and electron Spin Science Center, Pohang University of Science and Technology

  • Y.W. Cho

    • Korea Institute of Science and Technology