PL EN


Preferences help
enabled [disable] Abstract
Number of results
1997 | 92 | 2 | 267-270
Article title

Exchange Coupling in GdM Compounds

Content
Title variants
Languages of publication
EN
Abstracts
EN
The magnetic susceptibility of ferromagnetic GdM alloys (M=Cu_{1-x}Ga_{x}, Mg, Zn) has been investigated under helium gas pressure for temperatures above T_{C}. The evaluated pressure derivatives of the paramagnetic Curie temperature, dlnΘ/dP, appeared to be remarkably different for isovalent GdMg and GdZn compounds (-11.2 and -0.1 Mbar^{-1}, respectively). An analysis of the obtained dlnΘ/dP values for GdCu_{1-x}Ga_{x} alloys and results of ab initio electronic structure calculations have revealed the essential role of 5d electrons as the mediators of exchange coupling in ferromagnetic GdM compounds. The pressure derivatives of T_{C} were calculated by employing the modern mean-field theory, as well as the spin-fluctuation model. As a result, good agreement is found with the experimental values of dlnΘ/dP.
Keywords
EN
Publisher

Year
Volume
92
Issue
2
Pages
267-270
Physical description
Dates
published
1997-08
Contributors
  • Van der Waals-Zeeman Institute, University of Amsterdam Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands
author
  • B. Verkin Institute for Low Temperature Physics, Kharkov, 310164, Ukraine
author
  • Helax AB, Box 1704, 751 47 Uppsala, Sweden
author
  • Kure National College of Technology, 2-2-11 Agaminami, Kure 737, Japan
author
  • B. Verkin Institute for Low Temperature Physics, Kharkov, 310164, Ukraine
  • B. Verkin Institute for Low Temperature Physics, Kharkov, 310164, Ukraine
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv92z201kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.