MU+SR ON LA2-X-YREXSRYCUO4

Magnetic order is found in La1.85-xNdxSr0.15CuO4 with 0.3 less than or equal to x less than or equal to 0.6 and in La1.8-yEu0.2SryCuO4 with 0.12 less than or equal to y less than or equal to 0.18. The onset tem perature T-0 depends on the Sr concentration but no dependence on the Nd concentration is detectable. The spectra of the Nd doped samples sh ow certain deviations from the spectra of the Eu doped samples which a re caused by the interactions of the Nd spins with the Cu spins. These interactions are clearly visible below 5 K. (C) 1998 Elsevier Science B.V. All rights reserved.