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

P. G. Freeman·A. T. boothroyd·D. Prabhakaran·D. Gonzalez·M. Enderle
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Abstract

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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P. G. Freeman, A. T. boothroyd, D. Prabhakaran, D. Gonzalez, M. Enderle. 2002-11-06. Spin reorientation transition in the incommensurate stripe-ordered phase of La3/2Sr1/2NiO4. https://doi.org/10.1103/physrevb.66.212405

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