Investigation of Eu Ternary Pnictide by ESR

The investigation of the ESR in EuZ2nAs2 was performed at the frequency 9.3 GHz in the temperature range 4.2 – 300 K. The observed resonance line with the g-factors 1.96 of me Eu2+ ions was symmetric and it was described very good by a Lorentzian lineshape at temperatures above 120 K. At the tempera...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2011-10, Vol.324 (1), p.012020-5
Main Authors: Altshuler, T S, Goryunov, Yu V, Nateprov, A V
Format: Article
Language:English
Subjects:
Antiferromagnetism
Fluctuation
Gaussian
Group 5A compounds
Magnetic resonance
Order disorder
Physics
Resonance
Resonance lines
Symmetry
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The investigation of the ESR in EuZ2nAs2 was performed at the frequency 9.3 GHz in the temperature range 4.2 – 300 K. The observed resonance line with the g-factors 1.96 of me Eu2+ ions was symmetric and it was described very good by a Lorentzian lineshape at temperatures above 120 K. At the temperature decreasing well before the magnetic ordering temperature (TN) we was observed an exponential-like increasing of linewidth and a decreasing of the resonance field, indicating the magnification of antiferromagnetic fluctuations and the effective molecular Weis's field. The shape of the resonance line changes from Lorentzian to Gaussian at the temperature close to the TN. Below TN we observed a decrease of the lineswidth and the changing of the lineshape to the shape close Dysonian.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/324/1/012020