Magnetic properties and crystal structure of Sr3CoIrO6and Sr3NiIrO6

MIKHAILOVA, D., SCHWARZ, B., SENYSHYN, A., BELL, Anthony, SKOURSKI, Y., EHRENBERG, H., TSIRLIN, A.A., AGRESTINI, S., ROTTER, M., REICHEL, P., CHEN, J.M., HU, Z., LI, Z.M., LI, Z.F. and TJENG, L.H. (2012). Magnetic properties and crystal structure of Sr3CoIrO6and Sr3NiIrO6. Physical Review B, 86 (13).

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We have studied the magnetic properties and crystal structure of Sr 3 CoIrO 6 and Sr 3 NiIrO 6 as a function of temperature. Two characteristic temperatures, T 1 = 90 K and T 2 = 25 K for Sr 3 CoIrO 6 , and T 1 = 85 K and T 2 = 15 K for Sr 3 NiIrO 6 , were observed. Below T 1 a significant increase of magnetization and below T 2 a weak temperature dependence of magnetization in the field-cooled and practically zero magnetization values in the zero-field-cooled mode were detected for both compounds. The existence of Ir 4 + in Sr 3 CoIrO 6 was confirmed by an Ir- L III x-ray absorption measurement. Magnetoelastic effects have been observed in the temperature dependence of the lattice parameters of Sr 3 CoIrO 6 and Sr 3 NiIrO 6 . The magnetic structure of Sr 3 CoIrO 6 in zero fields can be described as a commensurate modulated antiferromagnet with a propagation vector k = ( 0 , 0 , 1 ) . Neutron powder diffraction with polarized neutrons gave evidence of short-range magnetic order, above and below the magnetic ordering temperature.

Item Type: Article
Uncontrolled Keywords: 02 Physical Sciences; 03 Chemical Sciences; Fluids & Plasmas
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SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 08 Jan 2019 13:38
Last Modified: 18 Mar 2021 07:05

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