Single crystal neutron diffraction study of the magnetic order-order transition in Ising- like spin-chain compound Ca3Co2O6
The present proposal on the Ising- like spin-chain compound Ca3Co2O6 is motivated by an observation of the slow magnetic order-order transition from the spin density wave (SDW) structure to the commensurate antiferromagnetic (CAFM) structure with a time scale of several hours in the neutron powder diffraction study. For the powder sample, under an applied field, the magnetic Bragg peaks corresponding to the CAFM structure disappears for H > 1 T. In powder sample (with magnetic field applied to a pellet of grains) the direction of the field relative to the easy axis changes due to the powder averaging. We, therefore, propose to carry out single crystal neutron diffraction measurements on Ca3Co2O6 using the high-flux single-crystal diffractometer D10 (wavelength = 2.36 angstrom) at the ILL in the temperature range of 2-30 K under zero as well as applied magnetic field (maximum 6T).Our proposal aims to study the effect of an external magnetic field on the ground state as well as on the time scale of the slow magnetic order-order transition from the SDW to the CAFM structure.
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JAIN Anil; Dmytro Inosov; JANG Hoyoung; KEIMER Bernhard; MALIK Vivek; OULADDIAF Bachir and PORTNICHENKO Pavlo. (2013). Single crystal neutron diffraction study of the magnetic order-order transition in Ising- like spin-chain compound Ca3Co2O6. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-14-249
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