Magnetic Properties of CrSb2

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Abstract
Magnetic property of CrSb 2 having marcasite structure was investigated by means of magnetic, X-ray and neutron diffractions, specific heat and electrical resistivity measurements. The magnetic susceptibility of CrSb 2 showed a maximum at about 550°K and it seems to be antiferromagnetic with a negative paramagnetic Curie point. From neutron diffraction and specific heat measurements, however, it was found that CrSb 2 has no antiferromagnetic spin ordering. The resistivity is semiconductive with two activation energies, 0.14 eV and 0.07 eV below and above 200°K, respectively. Basing on a covalent crystal model, an explanation on the magnetic and the electrical properties were given: that is, the ground state has no magnetic moment ( S =0), but the excited state is paramagnetic ( S =1) with the energy gap of 0.07 eV from the ground state.

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