Effect of Spacer Layer Thickness on the Magnetic Properties of $({\hbox {SnO}}_{2}/{\hbox {Cu–Zn}}\ {\hbox {Ferrite}})_{\rm n}$ Multilayers

Multilayers (ML) ofwere fabricated by rf-sputtering. The effect of number of bilayers, n, on its magnetic properties is studied. The rotational dependence of the ferromagnetic resonance (FMR) parameters depict the anisotropic nature of the ML. The anisotropy energy is positive and increases with increasing n, indicating an out of plane anisotropy. The hysteresis for depicts the ferromagnetic nature of the sample with saturation magnetization of 61 emu/cc CZF. With increase in n the hysteresis loop display coercivity along with a paramagnetic component indicating the existence of antiferromagnetic interactions which reduces the net magnetization of the ML to 20 emu/cc CZF for . The magnetization data supports the conclusions drawn from the FMR studies. The observed magnetic properties are ascribed to the lack of spin correlations in the interfacial region of the ML.

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“…The effective magnetization was calculated using the Kittel's relations as follows [11] for to the film plane…”

Section: Resultsmentioning

confidence: 99%

Magnetic Properties of ${[{\rm SnO}_{2}/{\rm Cu}{-}{\rm Zn}\ {\rm ferrite}]}_{\rm n}$ Multilayers

Saipriya

Singh

2012

IEEE Trans. Magn.

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“…Oxide materials are more stable and their ML can form magnetic structures which do not exist in bulk form. There are reports on ML of ferrites used along with NiO [5,6], MgO [7] , CoO [8] and SnO2 [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

FMR Studies of [SnO2/Cu-Zn Ferrite] Multilayers

Singh¹,

Saipriya²

2013

Ferromagnetic Resonance - Theory and Applications

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Effect of the number of interfaces on the magnetic properties of [SnO2/Cu-Zn ferrite] multilayer

Saipriya

Kurian

Singh

2012

Journal of Applied Physics

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The [SnO2/Cu-Zn ferrite (CZF)]n (n = 5, 10, 15, and 20) multilayer (ML) were deposited by rf-magnetron sputtering to study their magnetic properties. The magnetization and ferromagnetic resonance (FMR) measurements were undertaken to understand the effect of interfaces on the magnetic properties of these ML. FMR signal line shape changes from asymmetric to symmetric as n increases. The FMR signal peak to peak intensity, FMR linewidth, effective and saturation magnetization and coercivity exhibit oscillations as a function of n. In the parallel configuration the resonance field increases with increase in n, presumably due to the decrease in the active layer to dead layer thickness ratio. The interlayer coupling is strong in the ML with n = 5 leading to the formation of spin waves. The ML interlayer coupling and anisotropy decreases with increasing n. The oscillatory behavior of the magnetic properties can be ascribed to the nonmonotonic variations in the structure and the geometry of the interfaces.

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Effect of Spacer Layer Thickness on the Magnetic Properties of $({\hbox {SnO}}_{2}/{\hbox {Cu–Zn}}\ {\hbox {Ferrite}})_{\rm n}$ Multilayers

Cited by 3 publications

References 17 publications

Magnetic Properties of ${[{\rm SnO}_{2}/{\rm Cu}{-}{\rm Zn}\ {\rm ferrite}]}_{\rm n}$ Multilayers

Magnetic Properties of ${[{\rm SnO}_{2}/{\rm Cu}{-}{\rm Zn}\ {\rm ferrite}]}_{\rm n}$ Multilayers

FMR Studies of [SnO2/Cu-Zn Ferrite] Multilayers

Effect of the number of interfaces on the magnetic properties of [SnO2/Cu-Zn ferrite] multilayer

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