A4 Conference proceedings

Ni rich nanoclusters in CdSb: influence on magnetic and transport properties and perspectives for spintronics


Publication Details

Authors: Lähderanta Erkki, Laiho R, Lashkul A V, Lisunov K G, Ojala I, Zakhvalinskii V

Publisher: Collegium Basilea

Publication year: 2008

Language: English

Related journal or series: Nanotechnology Perceptions

Volume number: 4

Issue number: 3

Start page: 249

End page: 255

Number of pages: 7

ISSN: 1660-6795

JUFO level of this publication: 0

Open Access: Not an Open Access publication


Abstract

Magnetic and transport properties of the group II-V semiconductor CdSb
single crystals doped with Ni (2 atom%) have been investigated. The
magnetization data provide evidence for spheroidal magnetic Ni-rich Ni1-xSbx
nanoparticles, responsible for magnetic irreversibility in low fields,
rapid saturation of the magnetization with increasing field strength,
and large anisotropy of the saturation magnetization and coercivity.
Conductivity below T ∼ 2.5 K is found to be of variable-range hopping
(VRH) character in zero magnetic field, changing its type in nonzero
fields. Analysis of the resistivity and magnetoresistance yields values
of the microscopic parameters of the charge carriers and details of
their critical behaviour near the metal-insulator transition.


Last updated on 2019-11-10 at 10:38