On magnetic properties of some oxides with delafossite-type structure

Magnetic properties of ABO 2 (A = Cu, Ag, Pd and B = Cr, Fe) delafossite-type compounds are investigated on the base of a 2D-Heisenberg model using the expansion series method proposed for reciprocal magnetic susceptibility by Rushbrooke and Wood. Exchange integrals have been determined and their ev...

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Bibliographic Details
Published in:Materials research bulletin 1986-06, Vol.21 (6), p.745-752
Main Authors: Doumerc, Jean-Pierre, Wichainchai, Aree, Ammar, Abdelaziz, Pouchard, Michel, Hagenmuller, Paul
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Saturation moments and magnetic susceptibilities
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Summary:Magnetic properties of ABO 2 (A = Cu, Ag, Pd and B = Cr, Fe) delafossite-type compounds are investigated on the base of a 2D-Heisenberg model using the expansion series method proposed for reciprocal magnetic susceptibility by Rushbrooke and Wood. Exchange integrals have been determined and their evolution correlated to the variation of the Cr 3+Cr 3+ distance as the A cation varies. 3D-long range ordering which takes place at low temperature has been tentatively determined from the thermal variation of the susceptibility. The investigation leads to the conclusion that interlayer B 3+B 3+ interactions which occurs through (CuO 2) 3− groups are relatively strong in spite of the important structural anisotropy. Magnetic behavior of CuAlO 2, CuCoO 2 and AgCoO 2 have also been determined and discussed.
ISSN:0025-5408
1873-4227
DOI:10.1016/0025-5408(86)90155-8