The crystal structure and magnetic properties of Co-W (10-15 wt % W) and Co-P (2-5 wt % P) coatings obtained by electrochemical deposition onto copper substrates at various electrolyte temperatures (Co-W) and various concentrations of sodium hypophosphite in the electrolyte (Co-P) were studied. The coatings consist of individual crystallites with [001] and/or [100] textures determined by the deposition conditions. The structural and magnetic properties of the coatings were found to depend on the deposition conditions.

The structure of “continuous” Co-W and Co-Ni-W alloy films, as well as Co-containing metallic oxide heterogeneous films, covering the aluminum surface is studied in dependence of intergranular magnetic interaction and magnetization reversal processes by taking the angular dependences of the coercive force and irreversible susceptibility and also from δ M curves.

The structural and magnetic characteristics of Co-W coatings with a tungsten content from 0 to 20 wt % are compared. The coatings deposited at room temperature were found to consist of columnar crystallites with an hcp (cobalt) structure and the [001] axis perpendicular to the coating surface. It was suggested that the interaction between the crystallites is predominantly magnetostatic. In the coatings deposited at higher electrolyte temperatures, the [001] axis lies in the coating plane, the columnar type of the crystallites is replaced by a lamellar type, and the crystallites become larger. As a result, exchange interaction starts playing an important role in the magnetic interaction.

Co-W and Co-Ni-W films with 15 to 17 wt % tungsten electrochemically deposited on copper substrates at different electrolyte temperatures were studied. The films were found to consist of individual grains of an hcp cobalt-based solid solution. The film structure and the character of magnetic interaction between the grains were determined in relation to electrolyte temperature.

Electrodeposited Co-W films having a columnar microstructure with a [001] texture and magnetic anisotropy of the easy-plane type were studied. Analysis of field dependences of the remanent magnetization and irreversible susceptibility showed that the films consisted of isolated single-domain particles coupled by dipole (magnetostatic) interaction.

Electrodeposited Co-W films having a columnar microstructure with a [001] texture and magnetic anisotropy of the easy-plane type were studied. Analysis of field dependences of the remanent magnetization and irreversible susceptibility showed that the films consisted of isolated single-domain particles coupled by dipole (magnetostatic) interaction.

For the first time, photographs of dynamic domains produced in the course of magnetization reversal in amorphous Fe 5 Co 70 Si 15 B 10 films within the bounds of the third section of the pulse magnetization reversal curve were obtained. It was established that the magnetization reversal takes place by means of monotonic rotation of magnetization inside stripe domains oriented at right angles to the easy axis.

The dependence of remanent magnetization, coercive force, and hysteresis losses on the magnetization rotation angle has been studied in electrolytically deposited cobalt films consisting of separate elongated particles and in cobalt-tungsten films having a textured hcp cobalt-based structure with columnar crystallites. In the cobalt and [001]-textured cobalt-tungsten films, the angular dependence of the above parameters corresponds to magnetization reversal occurring predominantly by rotation, while the presence of columnar crystallites with different orientations and of a disoriented initial layer lead to the growing contribution of displacement

physica status solidi (a)Volume 15, Issue 2 p. K159-K161 Short Note Magnetic properties of MnBi films at low temperatures A. A. Glazer, A. A. Glazer Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this authorA. P. Potapov, A. P. Potapov Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this authorR. I. Tagirov, R. I. Tagirov Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this author A. A. Glazer, A. A. Glazer Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this authorA. P. Potapov, A. P. Potapov Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this authorR. I. Tagirov, R. I. Tagirov Institute of Metal Physics, Ural Scientific Centre of the Academy of Sciences of the USSR, SverdlovskSearch for more papers by this author First published: 16 February 1973 https://doi.org/10.1002/pssa.2210150264Citations: 1AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume15, Issue216 February 1973Pages K159-K161 RelatedInformation