57Fe Mössbauer and magneto-optical Kerr effect (MOKE) study of transcritical state in permalloy (FexNi100-x) thin films

Raj, Rakhul; Kuila, Manik; Gupta, Mukul; Reddy, ‬V. Raghavendra

doi:10.1007/s10751-021-01753-3

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…However, at a thickness of several hundreds of nanometres, FeNi films can demonstrate the transition into the so-called “transcritical” state. This state is characterized by an increase in the coercive force H c , appearance of the stripe domains, existence of so-called “rotatable anisotropy” and particular shape of the magnetic hysteresis loop [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. An indispensable condition for the possibility of a transition is the presence of perpendicular magnetic anisotropy in the sample, while the quality factor Q = K p /2πM s , where K p is the perpendicular anisotropy constant, M s is the saturation magnetization of the sample, which should be less than unity.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Svalov

Gorkovenko

Larrañaga

et al. 2022

Sensors

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FeNi films of different thickness and FeNi/(Fe, Co)/FeNi trilayers were prepared by magnetron sputtering deposition onto glass substrates. The permalloy films had a columnar microstructure. The detailed analysis of the magnetic properties based on the magnetic and magneto-optical measurements showed that at thicknesses exceeding a certain critical thickness, hysteresis loops acquire a specific shape and the coercive force of the films increase sharply. The possibility of the estimation of the perpendicular magnetic anisotropy constant using the Murayama equation for the thickness dependence of saturation field was demonstrated. The results of studies of the structural and magnetic properties of FeNi films laminated by Fe and Co spacers with different thickness are presented.

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Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Svalov

Gorkovenko

Larrañaga

et al. 2022

Sensors

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Depth Resolved Magnetic Studies of Fe/57Fe/C60 Bilayer Structure Under X-Ray Standing Wave Condition

Kaushik,

Raj,

Sergeev

et al. 2024

J Supercond Nov Magn

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Analysis of Relationship between Microwave Magnetic Properties and Magnetic Structure of Permalloy Films

Buznikov,

Lagarkov,

Maklakov

et al. 2024

Sensors

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Changes in the microwave permeability of permalloy films with an increase in the film thickness are studied. Measurement data on the evolution of microwave permeability with film thickness are analyzed in the framework of a model for the film with a regular stripe domain structure and out-of-plane magnetic anisotropy. A correlation between the microwave magnetic properties and magnetic structure of permalloy films is established. It is demonstrated that the observed decrease in the ferromagnetic resonance frequency and the static permeability with a growth in the film thickness can ascribed to the appearance of perpendicular anisotropy and the formation of a stripe domain structure. The calculated dependences of the ferromagnetic resonance frequency and static permeability on the film thickness are in reasonable agreement with the measurement results. Based on the analysis of these dependences, the domain width in the permalloy films is estimated. It is found that for thick permalloy films, the domain width is of the order of the film thickness. The results obtained may be useful for high-frequency applications of soft magnetic films.

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57Fe Mössbauer and magneto-optical Kerr effect (MOKE) study of transcritical state in permalloy (FexNi100-x) thin films

Cited by 3 publications

References 17 publications

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Depth Resolved Magnetic Studies of Fe/57Fe/C60 Bilayer Structure Under X-Ray Standing Wave Condition

Analysis of Relationship between Microwave Magnetic Properties and Magnetic Structure of Permalloy Films

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