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Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH 3 (CH 2 ) 4 NH 3 ]MnCl 4
Author(s) -
Niang A.,
Ablart G.,
Pescia J.,
Khechoubi E. M.,
Chanh N. B.,
Duplessix R.
Publication year - 1993
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.2221780225
Subject(s) - antiferromagnetism , laser linewidth , chemistry , electron paramagnetic resonance , condensed matter physics , magnetization , relaxation (psychology) , spin–lattice relaxation , spin (aerodynamics) , exchange interaction , thermal , lattice (music) , nuclear magnetic resonance , magnetic field , physics , thermodynamics , nuclear quadrupole resonance , optics , psychology , social psychology , laser , quantum mechanics , ferromagnetism , acoustics
The two‐dimensional (2D) system [NH 3 (CH 2 ) 4 NH 3 ]MnCl 4 is investigated by means of electron spin resonance (ESR) at X‐band over the 40 to 300 K temperature range. The linewidth, the g ‐factor, the spin‐lattice relaxation time T 1 , and their thermal and angular dependences are measured. The data are characteristic of a 2D compound. The angular dependence Δ H (θ) indicates, taking also into account the presence of a half‐field line, the diffusive character of the magnetization at long time. The observed thermal dependences are consistent with an antiferromagnetic order at 40 K. The experimental data are interpreted using the Bloembergen and Wang three‐reservoir model since a strong exchange interaction is present.