Magnetic Relaxation Phenomena above the Freezing Temperature in the Single Layered Cobaltite La 0.75 Sr 1.25 CoO 4 | Zendy

Mao Jinhua | Zendy; Li Longlong | Zendy; Li Luyan | Zendy

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Magnetic Relaxation Phenomena above the Freezing Temperature in the Single Layered Cobaltite La 0.75 Sr 1.25 CoO 4

Author(s) -

Mao Jinhua,

Li Longlong,

Li Luyan

Publication year - 2018

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.201700555

Subject(s) - cobaltite , relaxation (psychology) , condensed matter physics , magnetization , spin glass , materials science , ferromagnetism , power law , field (mathematics) , magnetic field , physics , metallurgy , psychology , social psychology , statistics , mathematics , quantum mechanics , pure mathematics

The magnetic relaxation properties of the single layered perovskite La 0.75 Sr 1.25 CoO 4 are investigated, in which spin glass‐like and cluster glass behaviors coexist at low temperature. Not only below but also above the freezing temperature T f , all magnetization measurements as a function of time display a cooperative relaxation. Above T f , the ZFC (zero‐field‐cooled) relaxation follows the stretched exponential form while the FC (field‐cooled) relaxation rate can be well described by a power law. These magnetic relaxation phenomena can be attributed to the local interactions between ferromagnetic clusters in La 0.75 Sr 1.25 CoO 4 .

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