Point defects and magnetic properties of neutron irradiated MgO single crystal | Zendy

Mengxiong Cao | Zendy; Yaru Ma | Zendy; Xingyu Wang | Zendy; Chun-Lin Ma | Zendy; Weiping Zhou | Zendy; Xiaoxiong Wang | Zendy; Weishi Tan | Zendy; Jun Du | Zendy

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Point defects and magnetic properties of neutron irradiated MgO single crystal

Author(s) -

Mengxiong Cao,

Yaru Ma,

Xingyu Wang,

Chun-Lin Ma,

Weiping Zhou,

Xiaoxiong Wang,

Weishi Tan,

Jun Du

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4973942

Subject(s) - irradiation , materials science , crystallographic defect , squid , single crystal , reciprocal lattice , scattering , neutron , ferromagnetism , diamagnetism , molecular physics , neutron scattering , condensed matter physics , nuclear magnetic resonance , crystallography , chemistry , optics , physics , nuclear physics , magnetic field , ecology , quantum mechanics , diffraction , biology

(100)-oriented MgO single crystals were irradiated to introduce point defects with different neutron doses ranging from 1.0×1016 to 1.0×1020 cm-2. The point defect configurations were studied with X-ray diffuse scattering and UV-Vis absorption spectra. The isointensity profiles of X-ray diffuse scattering caused by the cubic and double-force point defects in MgO were theoretically calculated based on the Huang scattering theory. The magnetic properties at different temperature were measured with superconducting quantum interference device (SQUID). The reciprocal space mappings (RSMs) of irradiated MgO revealed notable diffuse scattering. The UV-Vis spectra indicated the presence of O Frenkel defects in irradiated MgO. Neutron-irradiated MgO was diamagnetic at room temperature and became ferromagnetic at low temperature due to O Frenkel defects induced by neutron-irradiation

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