Chin. Phys. Lett.  2004, Vol. 21 Issue (10): 2045-2048    DOI:
Original Articles |
Full Aging in Spin Glass State of Y0.90Na0.10MnO3
CHEN Wei-Ran;ZHANG Fu-Chang;MIAO Jun;XU Bo;DONG Xiao-Li;CAO Li-Xin;QIU Xiang-Gang;ZHAO Bai-Ru
National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080
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CHEN Wei-Ran, ZHANG Fu-Chang, MIAO Jun et al  2004 Chin. Phys. Lett. 21 2045-2048
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Abstract We study the decays of the thermoremanent magnetization in Y0.90Na0.10MnO3 for different waiting times at the measuring temperature 33K, well below the spin glass (SG) transition temperature 42K. The results demonstrate that almost perfect full aging can appear even in the case of the cooling time as long as 700s from 60K to 33K. By subtracting the stationary component A(τ0t)a (A is a dimensionless constant, t represents the time, τ0 is the microscopic spin flipping time, and α is a parameter always in the rang of 0.1-0.01), the value of α is found to be much smaller than that reported in other SG systems, which is well consistent with the behaviour of the ac susceptibility. All of them are discussed based on the intrinsic geometric magnetic frustration for the present system.
Keywords: 75.50.Lk      75.40.Cx      75.30.Kz     
Published: 01 October 2004
PACS:  75.50.Lk (Spin glasses and other random magnets)  
  75.40.Cx (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))  
  75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I10/02045
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CHEN Wei-Ran
ZHANG Fu-Chang
MIAO Jun
XU Bo
DONG Xiao-Li
CAO Li-Xin
QIU Xiang-Gang
ZHAO Bai-Ru
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