Detection of the magnetic and electric transitions by electron paramagnetic resonance and low-field microwave absorption in the magnetoelectric Pb(Fe0.5Ta0.5)O-3

作者：Alvarez G^*; Montiel H; Pena J A; Castellanos M A; Zamorano R

来源：Journal of Alloys and Compounds, 2010, 508(2): 471-474.

DOI：10.1016/j.jallcom.2010.08.095

• Perovskite
• Multiferroic
• Magnetoelectric
• Resonant and non-resonant microwave absorption

An electron paramagnetic resonance (EPR) study of Pb(Fe0.5Ta0.5)O-3 powder samples in perovskite-type structure at X-band (8.8-9.8 GHz), in the 120-300 K temperature range, is presented. For all the temperatures, the EPR spectra show a single broad line attributable to Fe3+ ions. The onset of the ferro-paraelectric and antiferro-paramagnetic transitions has been determined from the temperature dependence of parameters deduced from the EPR spectra: the peak-to-peak linewidth (Delta H-pp), the resonance field (H-res) and the integrated intensity (I-EPR). Low-field microwave absorption (LFMA) is used to give further knowledge on this material; where this technique also gives evidence of the magnetic and electric orders.

• 出版日期2010-10-22