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Dyson line and modified Dyson line in the EPR measurements

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Popovych V., Bester M., Stefaniuk I., Kuzma M.

Nukleonika

2015

vol. 60

issue 3

385-388

The difficulty in determining the electron paramagnetic resonance (EPR) line parameters of ferromagnetic semiconductors has been addressed. For these materials, the resonance line is very broad and lies at low resonance field, so that only a part of the line can be detected experimentally. Moreover, the line is of asymmetric (Dysonian) shape as described by the line shape parameter α. We have compared values of line parameters derived by computer fitting of the whole experimental EPR line to the Dyson function (or modified Dyson function) with the values obtained by applying this procedure to the left and the right half of the line.

Magnetooptical properties and FMR in granular nanocomposites (Co84Nb14Ta2)x(SiO2)100−x

100%

Buravtsova V., Guschin V., Kalinin Y., Kirov S., Lebedeva E., Phonghirun S., Sitnikov A., Syr’ev N., Trofimenko I.

Open Physics

2004

vol. 2

issue 4

566-578

For nanodimensional magnetically inhomogeneous amorphous granular films of the system (Co84Nb14Ta2)x(SiO2)100−x , 30≤x≤60 at.% the concentration dependences of the magnetooptical Kerr effect (MOKE) spectra and FMR have been investigated. The observed changes in the MOKE and FMR spectra are associated with transformations of microstructure and topology of the nanocomposites. For the compositions within the percolation region the transversal Kerr effect increases by an order of magnitude.

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1 Nukleonika

1 Open Physics

1 2015

1 2004

1 Bester M.

1 Buravtsova V.

1 Guschin V.

1 Kalinin Y.

1 Kirov S.

1 Kuzma M.

1 Lebedeva E.

1 Phonghirun S.

1 Popovych V.

1 Sitnikov A.

1 Stefaniuk I.

1 Syr’ev N.

1 Trofimenko I.

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Dyson line and modified Dyson line in the EPR measurements

Magnetooptical properties and FMR in granular nanocomposites (Co84Nb14Ta2)x(SiO2)100−x