TY - JOUR T1 - Exchange interactions of in the ab plane for An EPR linewidth study JF - Physical Review B - Condensed Matter and Materials Physics Y1 - 1998 A1 - V. Likodimos A1 - Guskos, N. A1 - Garmari-Seale, H. AB - The electron paramagnetic resonance (EPR) linewidth of (Formula presented) in (Formula presented) is studied as a function of Er concentration. The EPR spectrum complies with the crystal-field ground doublet, while linewidth analysis shows the presence of exchange narrowing. Comparison of the theoretical EPR linewidth with the experimental data provide evidence for the presence of nearest-neighbor exchange interactions of the order of 1 K, most probably anisotropic along the a and b crystallographic axes. © 1998 The American Physical Society. VL - 58 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-0042340347&doi=10.1103%2fPhysRevB.58.14223&partnerID=40&md5=26a66553ba74457c7c29f2879bd72bf6 N1 - cited By 8 ER -