Out-of-plane spin alighnment in ultrathin films of sodium-doped manganites as evidenced by FMR measurements

Author

Tovstolytkin, A.I. ; Pogorily, A.M. ; Dzyublyuk, V.V. ; Podylalovskii, D.I. ; Matviyenko, A.I.

Author_Institution

Inst. of Magn., Kiev, Ukraine

fYear

2010

fDate

21-26 June 2010

Firstpage

1

Lastpage

3

Abstract

This work demonstrates ferromagnetic resonance (FMR) technique to study the magnetic anisotropy in ultrathin films of sodium-doped lanthanum manganites. The La<;sub>1-x<;/sub>Na<;sub>x<;/sub>MnO<;sub>3<;/sub> (x = 0.16) films (in what follows LNMO films) with a thickness d = 20 nm and dimensions 3×7 mm were prepared on single crystalline LaAlO₃(001) substrates by DC magnetron sputtering. The FMR studies were carried out in the temperature range 100-300 K with the use of X-band ELEXSYS E500 EPR spectrometer. The FMR measurements were performed at frequency v = 9.44 GHz for the case where the magnetic field was perpendicular to a film plane. Magnetization as a function of temperature was measured by means of a Faraday method.

Keywords

Faraday effect; ferromagnetic resonance; lanthanum compounds; magnetic anisotropy; magnetic structure; magnetic thin films; nanostructured materials; sodium compounds; sputter deposition; DC magnetron sputtering; Faraday method; La_1-xNa_xMnO₃; LaAlO₃; X-band ELEXSYS E500 EPR spectrometer; ferromagnetic resonance; magnetic anisotropy; magnetization; single crystalline LaAlO₃ (001) substrates; size 20 nm; sodium-doped lanthanum manganites; spin alighnment; temperature 100 K to 300 K; ultrathin films; Demagnetization; Epitaxial growth; Heating; Magnetic field measurement; Magnetic films; Magnetic resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), 2010 International Kharkov Symposium on

Conference_Location

Kharkiv

Print_ISBN

978-1-4244-7900-9

Type

conf

DOI

10.1109/MSMW.2010.5546041

Filename

5546041