K. Racka
Polish Academy of Sciences
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Publication
Featured researches published by K. Racka.
Journal of Applied Physics | 2005
Martí Gich; E. A. Shafranovsky; Anna Roig; A. Ślawska-Waniewska; K. Racka; Ll. Casas; Yu. I. Petrov; Elies Molins; M. F. Thomas
The production and structural characterization of gas-evaporated nanoparticles in the Fe1−xCrx system, with 0<x<0.83 are reported. The results show that for x∼0.5 the metastable σ-FeCr can be stabilized and it constitutes up 60wt% of the material. The sample with the highest σ-FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The σ-FeCr phase is weakly magnetic with an average magnetic moment of 0.1μB per Fe atom and a Curie temperature below ∼60K. It is stable up to 550K where it starts to transform to bcc-FeCr. Annealing at 700K yields Cr2O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions.
Physical Review B | 2004
A. Ślawska-Waniewska; Anna Roig; Martí Gich; Ll. Casas; K. Racka; N. Nedelko; Elies Molins
Journal of Alloys and Compounds | 2004
M. Ławecka; A. Ślawska-Waniewska; K. Racka; Marcin Leonowicz; I. Dzhardimalieva; A. S. Rozenberg; Anatolii D. Pomogailo
Journal of Magnetism and Magnetic Materials | 2005
K. Racka; Martí Gich; A. Ślawska-Waniewska; Anna Roig; Elies Molins
Journal of Magnetism and Magnetic Materials | 2008
K. Racka; A. Ślawska-Waniewska; Andrzej Krzyżewski; Martí Gich; Anna Roig; E. A. Shafranovsky; Yu. I. Petrov
Journal of Alloys and Compounds | 2006
E. A. Shafranovsky; Yu. I. Petrov; Martí Gich; K. Racka; A. Ślawska-Waniewska; Anna Roig; Elies Molins
Journal of Magnetism and Magnetic Materials | 2008
K. Racka; Anna Slawska-Waniewska; Andrzej Krzyżewski; Martí Gich; Anna Roig; E. A. Shafranovsky; Yu. I. Petrov
Journal of Applied Physics | 2005
Martí Gich; E. A. Shafranovsky; Anna Roig; Anna Slawska-Waniewska; K. Racka; Ll. Casas; Yu. I. Petrov; Elies Molins; Micheal F. Thomas
Journal of Magnetism and Magnetic Materials | 2004
L.K. Varga; A. Ślawska-Waniewska; Anna Roig; K. Racka; E. Fazakas; J. Ferenc; T. Kulik
Journal of Magnetism and Magnetic Materials | 2004
L.K. Varga; Anna Slawska-Waniewska; Anna Roig; K. Racka; Éva Fazakas; Jarai-Szabo Ferenc; T. Kulik