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Abstract : The antiferromagnetic structure of anhydrous cupric selenate, CuSeO4, has been determined from neutron diffraction powder data. In the Pbnm orthorhombic cell the magnetic structure is collinear of Type A +––+, with the spin orientation perpendicular to the c-axis. The CU2+ moment was found to be 0.9 ± 0.1 Bohr magnetons at 7.2 °K, the transition temperature is 34 °K. A phase transformation of the Pbnm polymorph into the denser structure of symmetry Cmcm was observed at 50 kbars, 500 °C.





Autor: W. Scharenberg G. Will

Fuente: https://hal.archives-ouvertes.fr/



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