Frequency Dependent Susceptibilities of Magnetic Materials

Duyneveld́t, A.J. van

doi:10.1007/978-94-011-3254-1_24

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Description Of Structures1

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2001

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“…21 Thus, the M ′′ versus T plots at different frequencies provide 1/τ versus T data, and a kinetic analysis can be performed using the Arrhenius relationship (eq 5). This is the characteristic behavior of a thermally activated Orbach process, 23 where U eff is the effective anisotropy energy barrier, k is the Boltzmann constant, and 1/τ 0 is the pre-exponential term. Plots of ln(1/τ) versus 1/T for 5 and 6 using M ′′ versus T data are shown in Figures 8 and 9, respectively, with the least-squares fit to eq 4 shown as a solid line.…”

Section: Description Of Structuresmentioning

confidence: 99%