Exchange stiffness of ferromagnets
IM2NP, UMR CNRS 7334, Aix-Marseille Université, 13397, Marseille, France
2 Institut für Materialwissenschaft, Technische Universität Darmstadt, D-64287, Darmstadt, Germany
3 Institut Jean Lamour, CNRS, Université de Lorraine, 54011, Nancy, France
Accepted: 21 February 2020
Published online: 12 March 2020
Spin-wave and exchange stiffness constants of 22 ferromagnetic compounds have been deduced from their spontaneous magnetization, , by using an improved technique. The improvement consists in utilizing the entire curve, up to the Curie point, rather than just its low-temperature part, with . For 17 of the 22 ferromagnets, literature data have been used, while 5 compounds have been studied anew, on single crystals grown for the purpose.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020