Eur. Phys. J. B 6, 313-315 (1998)
https://doi.org/10.1007/s100510050554

Magnetic order in La1.35Eu0.20Sr0.15CuO₄ studied by Fe Mössbauer spectroscopy

¹ Centro Brasileiro de Pesquisas Fisicas – CBPF, Rua Dr. Xavier Sigaud 150, 22 290-180 Rio de Janeiro, RJ, Brazil
² Physikalisches Institut, Universität zu Köln, Zülpicherstrasse 77, 50937 Köln, Germany

Corresponding author: ^a micklitz@colorix.ph2.uni-koeln.de

Received: 23 June 1998
Accepted: 14 July 1998
Published online: 15 December 1998

Abstract

⁵⁷Fe Mössbauer effect studies of La_1.65Eu_0.20Sr_0.15CuO₄ doped with 0.5 at% ⁵⁷Fe performed in the temperature region 300 K > T > 4.2 K give an onset temperature for magnetic ordering of  K. This temperature practically is the same as that found in Nd doped LaSr_xCuO₄. It indicates that the magnetic ordering temperature in the LTT phase of rare earth (RE) doped LaSr_xCuO₄ is independent of the RE moment. The direction of the ⁵⁷Fe magnetic moment in the magnetically ordered state is within the CuO₂ plane, while it has been found to be parallel to the c-axis in Nd doped LaSr_xCuO₄.