TY - JOUR
T1 - EMR probing of magnetic ordering in Pr1-xSrxMnO s (x = 0.22, 0.24, 0.26) manganite single crystals
AU - Shames, Alexander I.
AU - Auslender, M.
AU - Rozenberg, E.
AU - Mukovskii, Ya M.
AU - Gorodetsky, G.
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported in part by the Israeli Science Foundation administered by the Israel Academy of Sciences and Humanities under Grant 845/05.
PY - 2008/11/1
Y1 - 2008/11/1
N2 - To probe magnetic ordering in single crystals of Pr1-x,Sr x,MnO3 (x = 0.22, 0.24, 0.26), the X-band electron magnetic resonance (EMR) measurements were carried out in the temperature range 5 K ≤ T ≤ 600 K. It appears that two additional (as compared to well-known La1-xCaxMn O3system) factors influence on such ordering and on magnetic correlations in paramagnetic state. They are: low temperature ferromagnetic like order of Pr-subsystem and strong charge ordered state (CO). In particular, the competition of CO and ferromagnetic coupling results in suppression of EMR susceptibility at low temperatures, as well as in its notable deviation from the standard Curie-Weiss behavior in paramagnetic state. It is shown that the character of paramagnetic spin dynamics changes notably with Sr-doping, i.e., the higher doping-the stronger contribution of electron-impurity spin relaxation mechanism.
AB - To probe magnetic ordering in single crystals of Pr1-x,Sr x,MnO3 (x = 0.22, 0.24, 0.26), the X-band electron magnetic resonance (EMR) measurements were carried out in the temperature range 5 K ≤ T ≤ 600 K. It appears that two additional (as compared to well-known La1-xCaxMn O3system) factors influence on such ordering and on magnetic correlations in paramagnetic state. They are: low temperature ferromagnetic like order of Pr-subsystem and strong charge ordered state (CO). In particular, the competition of CO and ferromagnetic coupling results in suppression of EMR susceptibility at low temperatures, as well as in its notable deviation from the standard Curie-Weiss behavior in paramagnetic state. It is shown that the character of paramagnetic spin dynamics changes notably with Sr-doping, i.e., the higher doping-the stronger contribution of electron-impurity spin relaxation mechanism.
KW - Magnetic ordering
KW - Magnetic resonance
KW - Manganese compounds
UR - http://www.scopus.com/inward/record.url?scp=72449144844&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2008.2001522
DO - 10.1109/TMAG.2008.2001522
M3 - Article
AN - SCOPUS:72449144844
SN - 0018-9464
VL - 44
SP - 2918
EP - 2921
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 11 PART 2
ER -