"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

INFLUENCE OF CALCIUM ON PROPERTIES OF STRONTIUM AND BARIUM FERRITES FOR MAGNETIC MEDIA PREPARED BY COMBUSTION

P. D. Popa1,* , E. Rezlescu1, C. Doroftei1, N. Rezlescu1

Affiliation

  1. Institute of Technical Physics, Bd. D.Mangeron 47, 700050 Iasi, Romania

Abstract

For preparation of the strontium (SrFe12O19) and barium (BaFe12O19) hexaferrite powder, with CaO additive used in magnetic recording we used a new method, which is an improved variant of the coprecipitation method. According to this method, named self combustion, the reacting substances are metal nitrates and ammonium hydroxide. The CaO additive improves the coercitivity of hexaferrites and a better control of the grain growth is achieved..

Keywords

Hexaferrite, Dopping, Self combustion, Magnetic properties, Magnetic recording.

Submitted at: May 17, 2005
Accepted at: May 26, 2005

Citation

P. D. Popa, E. Rezlescu, C. Doroftei, N. Rezlescu, INFLUENCE OF CALCIUM ON PROPERTIES OF STRONTIUM AND BARIUM FERRITES FOR MAGNETIC MEDIA PREPARED BY COMBUSTION, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 3, pp. 1553-1556 (2005)