Ge substrates of (100) orientation were irradiated with 100 keV Mn ions (2 x 10(16) at./CM2) at a temperature of 190 degrees C. Pronounced swelling of the irradiated material up to 150 nm, associated with the formation of a Mn-doped amorphous porous Ge layer, is investigated by scanning electron microscopy and X-ray photoelectron depth profiling. Magneto-optical Kerr effect hysteresis loops have been used to characterize the magnetic properties of the obtained sample. The details of the hysteresis loops reveal that the ferromagnetic property of the sample up to similar to 20 K and the subsequent strong non-linear paramagnetic response must be ascribed to Mn atoms dispersed in the amorphous porous implanted layer. (c) 2007 Elsevier B.V. All rights reserved.

Magnetic response of Mn-doped amorphous porous Ge fabricated by ion-implantation

Verna A;Impellizzeri G;Priolo F
2007

Abstract

Ge substrates of (100) orientation were irradiated with 100 keV Mn ions (2 x 10(16) at./CM2) at a temperature of 190 degrees C. Pronounced swelling of the irradiated material up to 150 nm, associated with the formation of a Mn-doped amorphous porous Ge layer, is investigated by scanning electron microscopy and X-ray photoelectron depth profiling. Magneto-optical Kerr effect hysteresis loops have been used to characterize the magnetic properties of the obtained sample. The details of the hysteresis loops reveal that the ferromagnetic property of the sample up to similar to 20 K and the subsequent strong non-linear paramagnetic response must be ascribed to Mn atoms dispersed in the amorphous porous implanted layer. (c) 2007 Elsevier B.V. All rights reserved.
2007
INFM
FERROMAGNETIC SEMICONDUCTOR
INJECTION
GERMANIUM
MNXGE1-X
ALLOYS
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/171041
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 6
social impact