Journal ArticleDOI
Magnetization Studies on Tb-Fe and Tb-Fe-Co Thin Films
P. Rajasekhar,G. Markandeyulu +1 more
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TLDR
Magnetization studies were carried out on TbFe and Tb-Fe-Co thin films, prepared using magnetron co-sputtering technique as discussed by the authors, and all the films were observed to exhibit planar anisotropy at 25 K.Abstract:
Magnetization studies were carried out on Tb-Fe and Tb-Fe-Co thin films, prepared using magnetron co-sputtering technique. The films Tb
25
Fe
75 and Tb
31
Fe
69 were found to have perpendicular magnetic anisotropy (PMA) both at 25 and 300 K. In Tb-Fe-Co films, all the films were observed to exhibit planar anisotropy at 25 K, due to the increase of strain-induced anisotropy as a result of large magnetostriction at low temperatures leading to the development of in-plane anisotropy. PMA was observed in the films Tb
35
Fe
37
Co
28
, Tb
56
Fe
25
Co
19
, and Tb
63
Fe
20
Co
17 at 300 K. The Curie temperatures (T
C ) of both TbxFe
100-x and Tb-Fe-Co films were found to be above room temperature (RT). Observing the Curie temperatures well above the RT, with the existence of PMA at RTs, is an interesting object in these films to find in magnetic data storage applications.read more
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Journal ArticleDOI
Laser-Induced Magnetic Nanostructures with Tunable Topological Properties
Marco Finazzi,Matteo Savoini,Matteo Savoini,A.R. Khorsand,Arata Tsukamoto,Akiyoshi Itoh,Lamberto Duò,Andrei Kirilyuk,Theo Rasing,Motohiko Ezawa +9 more
TL;DR: The creation and real-space observation of magnetic structures with well-defined topological properties and a lateral size as low as about 150 nm are reported, generated in a thin ferrimagnetic film by ultrashort single optical laser pulses.
Journal ArticleDOI
Ferromagnetic Materials: A Handbook on the Properties of Magnetically Ordered Substances, Vols. 1 and 2
Book
Ferromagnetic materials : a handbook on the properties of magnetically ordered substances
E. P. Wohlfarth,K. H. J. Buschow +1 more
TL;DR: In this article, Quadrupolar interactions and magneto-elastic effects in rare-earth intermetallics compounds are discussed and a first-order magnetic process is described.
Journal ArticleDOI
Structural origins of magnetic anisotropy in sputtered amorphous Tb-Fe films
TL;DR: Using x-ray-absorption fine-structure measurements, clear evidence is obtained for structural anisotropy in amorphous sputter-deposited TbFe films exhibiting perpendicular magnetic an isotropy.
Journal ArticleDOI
Direct Observation of an Amorphous Spin-Polarization Distribution
TL;DR: In this paper, the existence of an amorphous spin-polarization distribution in a sputtered rare-earth-iron alloy of composition 33 at% Tb, 67 at% Fe was shown from neutron diffraction measurements.