The magnetic properties of FeTa2O6. Magnetic structure and low-dimensional behavior

Magnetic phases of the quasi-two-dimensional compounds FexCo1 −xTa2O6

“…These materials exhibit quasi-two-dimensional magnetic characteristics. They are paramagnetic at room temperature, present short-range magnetic correlations at low temperature (∼ 15 K), as evidenced by a broad maximum of the magnetic susceptibility as a function of temperature, and order antiferromagnetically, with Néel temperatures between 5 and 9.5 K. FeTa 2 O 6 presents a magnetic structure described by two propagation vectors, (1/2, 0, 1/2) and (0, 1/2, 1/2) [1], associated to magnetic ions at the corner and center of the structural unit cell, whose magnetic moments are oriented perpendicularly to one another. In the following we will refer to this structure as AFF (F for Fe).…”

“…Since the original investigation of the magnetic properties of FeTa 2 O 6 by Eicher and coworkers [1], many studies have followed, not only using magnetic measurements [2] but also Mössbauer spectroscopy [3], and elastic as well as inelastic neutron scattering techniques on powder or single-crystal samples [4,5]. Magnetic ordering in Co and Ni isotype compounds has also been the subject of complementary investigations [6][7][8][9][10].…”

“…All magnetic moments lie on the ab plane, alternating along the directions [1,1,0] and [1,1,0] from one plane to the next, these easy-axis directions coinciding with the orientation of a shortened principal axis of the oxygen octahedron surrounding each magnetic ion. This 90…”

Drastic changes of electronic structure and crystal chemistry upon oxidation of SnII2TiO4E2 into SnIV2TiO6: An ab initio study

“…This transformation in rutile like form is ensured by the existence of the solid solution Sn x Ti 1-x O 2 as indicated above [10] and perhaps as trirutile form. Such ratio is also observed in trirutile aristotype FeTa 2 O 6 [24] which crystallizes in the same tetragonal P4 2 /mnm space group as rutile while allowing for the presence of two different counter anions, i.e. Sn and Ti in 2:1 ratio.…”

Local and long-range magnetic order of thespin−32systemCoSb2O6

“…7 Their low-dimensional magnetic behavior is evident from experiments [8][9][10][11][12] and electronic structure calculations. 13,14 In the case of CuSb 2 O 6 , orbital order is believed to promote antiparallel ordering of the magnetic moments along the [110] direction at z = 0 and the [110] direction at z = 1/2, which is commonly referred to as the two-sublattice antiferromagnetic structure.…”