Competition of interbilayer magnetic couplings in R1.4Sr1.6Mn2O7 (R = La1-zNdz)

Y. Moritomo, K. Ohoyama, M. Ohashi

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


Chemical substitution effects on the magnetic and transport properties have been investigated for single crystals of (La1-zNdz)1.4Sr1.6Mn2O7 with bilayer structure. We have found that the ferromagnetic ground state for z = 0.0 is replaced by a layered antiferromagnetic state with alternating ferromagnetic bilayers beyond z ≥0.1. Reflecting the subtle balance of the competing interbilayer exchange couplings, application of an external magnetic field induces an antiferromagnetic-ferromagnetic transition. The transition accompanies a switching-type reduction of the current-perpendicular-to-plane resistivity, which can be viewed as a spin-valve functionality.

Original languageEnglish
Pages (from-to)157-160
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number1
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Condensed Matter Physics


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