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.
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 1999|
ASJC Scopus subject areas
- Condensed Matter Physics