Magnetic properties of U1-xThxAs and UAs1-xSex compoundsReportar como inadecuado

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Abstract : The thermal variation of the magnetic susceptibility of U1 -xThxAs and UAs1-xSex compounds has been investigated by a mutual inductance technique. The magnetic phase diagram of these two compounds has been determined in zero field. Anomalies as peaks or jumps have been evidenced in the thermal variation of the magnetic susceptibility for both series of compounds, above the ordering temperature. Neutron diffraction experiments are necessary to know if these anomalies are associated with changes in the magnetic structures. For U1-xThxAs, as for UAs1-xSex compounds, additional conduction electrons are provided by thorium and selenium. The similarities between the magnetic behaviour of these compounds show that the conduction electrons play a fundamental rôle in their magnetic properties.

Keywords : antiferromagnetic properties of substances ferrimagnetic properties of substances ferromagnetic properties of substances magnetic susceptibility magnetic transitions paramagnetic properties of substances thorium compounds uranium compounds

Autor: H. Bartholin C. Breandon R. Tchapoutian O. Vogt



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