Determination of the magnetization distribution in Cr2O3 using spherical neutron polarimetry
Determination of the magnetization distribution in Cr2O3 using spherical neutron polarimetry
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DOI：
10.1088/0953-8984/14/8/323
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发表时间：
2002-03-04
影响因子：
2.7
通讯作者：
Tasset, F
中科院分区：
文献类型：
--
作者：
Brown, PJ;Forsyth, JB;Tasset, F
The magnetization distribution due to the Cr3+ ion in Cr2O3 has been determined using spherical neutron polarimetry. The magnetic structure factors of h 0 l reflections have been measured out to sin theta/lambda = 0.75 Angstrom(-1). The results show that the Cr3+ magnetic moment is reduced by the zero-point spin deviation and by covalent mixing to 2.48 mu(B). They are consistent with the Cr d electrons being in the trigonally symmetric a(1) and e orbitals derived from the cubic orbitals with t(2g) symmetry. There is a small but significant magnetization which is not accounted for by these orbitals, which is attributed to covalent overlap. Its symmetry is consistent with the magneto-electric susceptibility.
