Measurement of the attempt frequency in antiferromagnets

TY - JOUR

T1 - Measurement of the attempt frequency in antiferromagnets

AU - Vallejo Fernandez, Gonzalo

AU - Aley, N. P.

AU - Chapman, J. N.

AU - O'Grady, K.

PY - 2010/11/29

Y1 - 2010/11/29

N2 - The characteristic relaxation frequency of a granular antiferromagnet f(0) in the Neel-Arrhenius expression has been calculated from a high resolution measurement of the time dependence of the median blocking temperature of a CoFe/IrMn exchange biased system. Calculations based on a granular model give f(0) = (2.1 +/- 0.4) x 10(12) s(-1), three orders of magnitude greater than values commonly found in the literature. (C) 2010 American Institute of Physics. [doi:10.1063/1.3522887]

AB - The characteristic relaxation frequency of a granular antiferromagnet f(0) in the Neel-Arrhenius expression has been calculated from a high resolution measurement of the time dependence of the median blocking temperature of a CoFe/IrMn exchange biased system. Calculations based on a granular model give f(0) = (2.1 +/- 0.4) x 10(12) s(-1), three orders of magnitude greater than values commonly found in the literature. (C) 2010 American Institute of Physics. [doi:10.1063/1.3522887]

UR - http://www.scopus.com/inward/record.url?scp=78650631595&partnerID=8YFLogxK

U2 - 10.1063/1.3522887

DO - 10.1063/1.3522887

M3 - Article

SN - 0003-6951

VL - 97

SP - -

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

M1 - 222505

ER -