The magnetic structure of Er5Si3

Magnetic structure of the Mn5Si3-type Er5Si3 compound

“…Whereas, in accordance with work [4] the Er 5 Si 3 show collinear antiferromagnetic ordering below 20 K. At 2 K the magnetic structure of Er 5 Si 3 is collinear sine antiferromagnet with wave vector K 1 ¼ [0, AE1/4, 0] (the size of magnetic unit cell is 4a  4a  c in terms of hexagonal lattice or a  23 1/2 a  c in terms of orthorhombic lattice), the erbium magnetic moments reach the value of 5.2 m B and 8.3 m B for the 6g and 4d site respectively [4].…”

“…[2,4] the Er 5 Si 3 has been found to exhibit a high-temperature c-collinear sine modulated antiferromagnetic ordering with wave vector K 1 ¼ [0, 0, AE0.277(2)] (Antiferromagnet I) and low-temperature one with K 2 ¼ [0, AE1/4, 0] (Antiferromagnet II). The analysis of the temperature behavior of the magnetic reflection intensities demonstrated that the Er 5 Si 3 compound is paramagnetic at 29 K, like in [2].…”

“…1d) is c-collinear sine modulated antiferromagnet (wave vector K 2 ¼ [0, AE1/4, 0]) corresponds to the magnetic structure of Ref. [4] (Table 2 The high-temperature and low-temperature magnetic components Antiferromagnet I and Antiferromagnet II coexist in short temperature range between 10 K and 13 K (Figs. 1c and 2a).…”

“…To understand the specific features of magnetic ordering of Er 5 Si 3 and to resolve the contradictions of models [2] and [4] we have carried out neutron diffraction study on this compound from 297 to 1.5 K, the results of which are presented below.…”

The magnetic ordering in the Ho5Si3 and Ho5Ge3 compounds

“…193) [1,2]; among them, the two groups of silicides and germanides have been found to show interesting electrical and magnetic properties (as a few examples, see Ref. [3][4][5][6][7][8][9][10][11].…”