Spin reorientation transition in the incommensurate stripe-ordered phase of La3/2Sr1/2NiO4

Details Spin reorientation transition in the incommensurate stripe-ordered phase of La3/2Sr1/2NiO4 Spin reorientation transition in the incommensurate stripe-ordered phase of La3/2Sr1/2NiO4

2002-08-19

arxiv.org/abs/cond-mat/0208363v2

Phys. Rev. B 66, 212405 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

REVTex 4. 4 pages including 4 figures. Minor changes to text. Accepted to be published in Physical Review B

Scientific paper

10.1103/PhysRevB.66.212405

The spin ordering of La3/2Sr1/2NiO4 was investigated by magnetization measurements, and by unpolarized- and polarized-neutron diffraction. Spin ordering with an incommensurability epsilon ~ 0.445 is observed below T_so ~ 80 K. On cooling, a spin reorientation is observed at 57 +/- 1 K, with the spin axes rotating from 52 +/- 4 degrees to 78 +/- 3 degrees. This is the first time a spin reorientation has been observed in a La2-xSrxNiO4+delta compound having incommensurate stripe order.

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