Electron spin resonance study of Fe doping effect in La0.67Ca0.33MnO3

被引:9
作者
Ning, Wei [1 ]
Zhang, Xiang-Qun [1 ]
Cheng, Zhao-Hua [1 ]
Sun, Young [1 ]
机构
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China
关键词
Electron spin resonance; Manganite; Doping effect; COLOSSAL MAGNETORESISTANCE; HYPERFINE INTERACTIONS; MAGNETIC ORDER; DYNAMICS;
D O I
10.1016/j.jmmm.2008.10.045
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electron spin resonance (ESR) study was carried out on La(0.67)Ca(0.33)Mn(1-x)FexO(3) (x = 0.0, 0.04) samples. The temperature dependence of the ESR spectra indicates the presence of phase separation above and below T-C in x = 0.0 and 0.04 sample, respectively. The increase of the g-value in the high-temperature region indicates the existence of local spin correlations even in the paramagnetic state. The activation energy obtained from both the temperature dependence of the ESR intensity and linewidth exhibits a smaller value in the Fe-doped sample. Our study suggests that the ferromagnetic spin correlations would be significantly weakened by a slight doping of Fe ions on Mn sites. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:1159 / 1162
页数:4
相关论文
共 19 条
[1]   Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe [J].
Ahn, KH ;
Wu, XW ;
Liu, K ;
Chien, CL .
PHYSICAL REVIEW B, 1996, 54 (21) :15299-15302
[2]   Evidence for breakdown of ferromagnetic order below TC in the manganite La0.8Ca0.2MnO3 [J].
Chechersky, V ;
Nath, A ;
Isaac, I ;
Franck, JP ;
Ghosh, K ;
Ju, H ;
Greene, RL .
PHYSICAL REVIEW B, 1999, 59 (01) :497-502
[3]   Comparative studies of the behaviour of La0.8Ca0.2MnO3 with different oxygen isotope substitutions [J].
Chechersky, V ;
Nath, A ;
Isaac, I ;
Franck, JP ;
Ghosh, K ;
Greene, RL .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (45) :8921-8931
[4]   Evidence for magnetic polarons in the magnetoresistive perovskites [J].
DeTeresa, JM ;
Ibarra, MR ;
Algarabel, PA ;
Ritter, C ;
Marquina, C ;
Blasco, J ;
Garcia, J ;
delMoral, A ;
Arnold, Z .
NATURE, 1997, 386 (6622) :256-259
[5]   Transition-element doping effects in La0.7Ca0.3MnO3 [J].
Ghosh, K ;
Ogale, SB ;
Ramesh, R ;
Greene, RL ;
Venkatesan, T ;
Gapchup, KM ;
Bathe, R ;
Patil, SI .
PHYSICAL REVIEW B, 1999, 59 (01) :533-537
[6]   Colossal magnetoresistance and hyperfine interactions in iron-doped La0.75Ca0.25MnO3 [J].
Hannoyer, B ;
Marest, G ;
Greneche, JM ;
Bathe, R ;
Patil, SI ;
Ogale, SB .
PHYSICAL REVIEW B, 2000, 61 (14) :9613-9620
[7]   Structure and magnetic order in La1-xCaxMnO3 (0<x≤0.33) [J].
Huang, Q ;
Santoro, A ;
Lynn, JW ;
Erwin, RW ;
Borchers, JA ;
Peng, JL ;
Ghosh, K ;
Greene, RL .
PHYSICAL REVIEW B, 1998, 58 (05) :2684-2691
[8]  
Maignan A, 1997, Z PHYS B CON MAT, V102, P19, DOI 10.1007/s002570050260
[9]   Transport properties, magnetic ordering, and hyperfine interactions in Fe-doped La0.75Ca0.25MnO3:: Localization-delocalization transition [J].
Ogale, SB ;
Shreekala, R ;
Bathe, R ;
Date, SK ;
Patil, SI ;
Hannoyer, B ;
Petit, F ;
Marest, G .
PHYSICAL REVIEW B, 1998, 57 (13) :7841-7845
[10]   Evidence for collective spin dynamics above the ordering temperature in La1-xCaxMnO3+delta [J].
Oseroff, SB ;
Torikachvili, M ;
Singley, J ;
Ali, S ;
Cheong, SW ;
Schultz, S .
PHYSICAL REVIEW B, 1996, 53 (10) :6521-6525