Metastable magnetic behavior in La0.9Tbsub0.1MnO3

The linear and nonlinear magnetizations of La0.9Tb0.1MnO3 at low temperatures were reported in detail. The temperature dependence of magnetization shows peaks at 50, 100 and 150 K, respectively. When LaMnO3 is Tb-doped, its magnetic structure exhibits a canted antiparallel spin order. This is differ...

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Bibliographic Details
Published inRare metals Vol. 36; no. 7; p. 596
Main Authors Liu, Wei-bin, Zhang, Ying-tang, Chen, Zi-yu, Liu, Li-zhu, Li, Sheng-tao, Ai, Tao-tao
Format Journal Article
LanguageEnglish
Published Beijing Springer Nature B.V 01.07.2017
Subjects
Antiferromagnetism
Ferromagnetism
Magnetic properties
Magnetic structure
Magnetization
Metastable state
Spin glasses
Temperature dependence
Transition temperature
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Summary:The linear and nonlinear magnetizations of La0.9Tb0.1MnO3 at low temperatures were reported in detail. The temperature dependence of magnetization shows peaks at 50, 100 and 150 K, respectively. When LaMnO3 is Tb-doped, its magnetic structure exhibits a canted antiparallel spin order. This is different from classical antiferromagnetic (AFM) in which the relaxation behavior takes place at about 150 K. At 50 K, Tb-doped LaMnO3 exhibits canonical spin glass behavior, arising from the competition of exchange and super-exchange between spins. The peak at 100 K shows neither spin glass behavior nor canted AFM behavior. Its peak value increases with frequency increasing, and the transition temperature of the peak shifts to higher temperatures with frequency increasing. The study of aging behavior at 100 K shows a periodical variable metastability, which is ascribed to the competition between ferromagnetic (FM)-, AFM- and sinusoidal-order interactions. This work should shed a light on understanding the complex magnetic structure of the perovskite oxides.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-015-0476-7