Soft mode of antiferromagnetic multilayers near the surface spin-flop transition
نویسندگان
چکیده
منابع مشابه
Antiferromagnetic spin flop and exchange bias
The effect of the antiferromagnetic spin flop on exchange bias has been investigated in antiferromagnetic (MnF2) –ferromagnetic ~Fe! bilayers. Cooling and measuring in fields larger than the antiferromagnetic spinflop field, HSF , causes an irreversible reduction of the magnitude of the exchange bias field, HE . This indicates that, contrary to what is normally assumed, the interface spin struc...
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The role of bulk antiferromagnetic spins on exchange bias was investigated in interface spin-flop coupled Fe/MnPd bilayers and Fe/MnPd/Fe/IrMn multilayers. Magnetic measurement of the bilayers showed that the exchange bias saturated at a uniquely large critical thickness, ∼300 Å, with a spin reorientation transition simultaneously observed. Field cooling of the multilayer, with parallel or anti...
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The angular dependence of the spin-flop transition in Gd5Ge4 has been examined by magnetization measurements of a single crystal. When the magnetic field vector is tilted away from the antiferromagnetic easy axis (c axis) toward the b axis, the spin-flop transition always remains first order in nature. However, when the field vector is tilted away from the c axis toward the a axis, the first or...
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Direct evidence of the nonuniformly canted state of the spin-flop phase induced by a magnetic field applied to Fe/Cr(100) superlattices is obtained by polarized neutron reflectometry. It is unambiguously demonstrated that the magnetization of the alternating Fe layers is twisted through the multilayer stack proving a stable noncollinear configuration. The maximal tilt at the end layers progress...
متن کاملPercolation Transition in the Random Antiferromagnetic Spin-1 Chain
We give a physical description in terms of percolation theory of the phase transition that occurs when the disorder increases in the random antiferromagnetic spin-1 chain between a gapless phase with topological order and a random singlet phase. We study the statistical properties of the percolation clusters by numerical simulations, and we compute exact exponents characterizing the transition ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.71.014409