TY - JOUR
T1 - Electron paramagnetic resonance and low-field microwave absorption in the manganese-gallium oxide
AU - Montiel, H.
AU - Alvarez, G.
AU - Conde-Gallardo, A.
AU - Zamorano, R.
N1 - Publisher Copyright:
©2015 Elsevier B.V. All rights reserved.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Microwave absorption measurements in MnGa2O4 powders are carried out at X-band (8.8-9.8 GHz) in 92-296 K temperature range. For all temperatures, the electron paramagnetic resonance (EPR) spectra show a single broad line due to Mn2+ ions. Temperature dependence of the EPR parameters: the peak-to-peak linewidth (ΔHpp), the integrated intensity (IEPR) and the g-factor, suggests the presence of magnetic fluctuations that precede to antiferromagnetic ordering at low temperature. Additionally, the low-field microwave absorption (LFMA) is used to give further information on this material, giving also evidence of these magnetic fluctuations.
AB - Microwave absorption measurements in MnGa2O4 powders are carried out at X-band (8.8-9.8 GHz) in 92-296 K temperature range. For all temperatures, the electron paramagnetic resonance (EPR) spectra show a single broad line due to Mn2+ ions. Temperature dependence of the EPR parameters: the peak-to-peak linewidth (ΔHpp), the integrated intensity (IEPR) and the g-factor, suggests the presence of magnetic fluctuations that precede to antiferromagnetic ordering at low temperature. Additionally, the low-field microwave absorption (LFMA) is used to give further information on this material, giving also evidence of these magnetic fluctuations.
KW - Electron paramagnetic resonance
KW - Low-field microwave absorption
KW - Magnetic transition
KW - Spinel-type oxide
UR - http://www.scopus.com/inward/record.url?scp=84924559961&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2015.03.007
DO - 10.1016/j.jmmm.2015.03.007
M3 - Artículo
SN - 0304-8853
VL - 385
SP - 188
EP - 192
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -