Abstract
High-quality antiferromagnetic (AF) superlattices ((, as judged from high-resolution x-ray diffraction (HRXD), were grown on (001) substrates. Using HRXD, the thermal-expansion coefficient (T) vs T was measured. While two shifted AF anomalies are seen for (m,n)=(25,30), only one is observed for (m,n)=(19,6). Comparison of (T) in the two superlattices with that of and indicates that a significant redistribution of the magnetic entropy occurs.
- Received 15 August 1990
DOI:https://doi.org/10.1103/PhysRevLett.65.2913
©1990 American Physical Society