<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">V. Likodimos</style></author><author><style face="normal" font="default" size="100%">Guskos, N.</style></author><author><style face="normal" font="default" size="100%">Garmari-Seale, H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Exchange interactions of in the ab plane for An EPR linewidth study</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review B - Condensed Matter and Materials Physics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-0042340347&amp;doi=10.1103%2fPhysRevB.58.14223&amp;partnerID=40&amp;md5=26a66553ba74457c7c29f2879bd72bf6</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">21</style></number><volume><style face="normal" font="default" size="100%">58</style></volume><pages><style face="normal" font="default" size="100%">14223-14226</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">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.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 8</style></notes></record></records></xml>