Kind effect of rare-earth spacer layer on structural and magneto-optical properties of Mn/RE/Bi films

V. A. Seredkin; V. Yu. Yakovchuk; L. V. Bourkova; Sergei G. Ovchinnikov

doi:10.1117/12.301401

1 January 1998 Kind effect of rare-earth spacer layer on structural and magneto-optical properties of Mn/RE/Bi films

V. A. Seredkin, V. Yu. Yakovchuk, L. V. Bourkova, Sergei G. Ovchinnikov

Proceedings Volume 3347, Optical Information Science and Technology (OIST97): Optical Recording Mechanisms and Media; (1998) https://doi.org/10.1117/12.301401
Event: Optical Information Science and Technology, 1997, Moscow, Russian Federation

Abstract

The structural, magnetic and magneto-optical properties of Mn/RE/Bi (RE equals Nd, Eu, Cd, Tb, Dy) films prepared by multilayer technology are reported. The results of the investigations show that these films exhibit a smaller crystallite size, an improved squareness of the hysteresis loops, an enhanced Kerr rotation and a higher stability of the structural and magnetic properties than that of MnBi films. It is assumed that the specific influence of RE spacer layers on the structure is related with their atomic radius. The possible reasons of the Kerr effect enhancement in Mn/RE/Bi films were discussed: the increased matrix elements of the 6p-3d transitions, the significant polarization of Bi 6p band, the change of the density of states near the Fermi level. It was found that Mn/Dy/Bi films have best parameters: average crystallite size 15 nm, H_c equals 6 kOe, K_u equals 1 (DOT) 10⁷ erg/cc, 2(Theta) _k equals 4.5 degree(s), (Theta) _k(root)R equals 1.5 degree(s) at (lambda) equals 633 nm. The wavelength dependent of Kerr rotation have the maximum in the region (lambda) equals 633 nm that represents the practical interest. The suitable properties of Mn/Dy/Bi films allow it to use it as a magneto-optical storage medium. The results of the thermomagnetic writing and magneto-optical readout in these films were presented.

Citation Download Citation

V. A. Seredkin, V. Yu. Yakovchuk, L. V. Bourkova, and Sergei G. Ovchinnikov "Kind effect of rare-earth spacer layer on structural and magneto-optical properties of Mn/RE/Bi films", Proc. SPIE 3347, Optical Information Science and Technology (OIST97): Optical Recording Mechanisms and Media, (1 January 1998); https://doi.org/10.1117/12.301401

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available