Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1039/c3nr02013d (literal)

Alternative label

• Ge, Chuannan and Wan, Xiangang and Pellegrin, Eric and Hu, Zhiwei and Valvidares, S. Manuel and Barla, Alessandro and Liang, Wen-I. and Chu, Ying-Hao and Zou, Wenqin and Du, Youwei (2013)
  Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO
  in Nanoscale (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Ge, Chuannan and Wan, Xiangang and Pellegrin, Eric and Hu, Zhiwei and Valvidares, S. Manuel and Barla, Alessandro and Liang, Wen-I. and Chu, Ying-Hao and Zou, Wenqin and Du, Youwei (literal)

Pagina inizio

• 10236 (literal)

Pagina fine

• 10241 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 5 (literal)

Rivista

• Nanoscale (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 21 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Wan, XG (Reprint Author), Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China. Ge, Chuannan; Wan, Xiangang; Zou, Wenqin; Du, Youwei, Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China. Ge, Chuannan; Wan, Xiangang; Zou, Wenqin; Du, Youwei, Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China. Ge, Chuannan, Jiangsu Inst Educ, Dept Phys, Nanjing 210013, Jiangsu, Peoples R China. Pellegrin, Eric; Valvidares, S. Manuel; Barla, Alessandro, CELLS ALBA Synchrotron Radiat Facil, E-08290 Barcelona, Spain. Hu, Zhiwei, Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany. Barla, Alessandro, ISM CNR, Ist Struttura Mat, I-34149 Trieste, Italy. Liang, Wen-I.; Chu, Ying-Hao, Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan. (literal)

Titolo

• Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO (literal)

Abstract

• We have observed a large exchange bias field H-E approximate to 2460 Oe and a large coercive field H-C approximate to 6200 Oe at T = 2 K for Co/CoO core-shell nanoparticles (similar to 4 nm diameter Co metal core and CoO shell with similar to 1 nm thickness) embedded in a non-magnetic MgO matrix. Our results are in sharp contrast to the small exchange bias and coercive field in the case of a non-magnetic Al2O3 or C matrix materials reported in previous studies. Using soft X-ray magnetic circular dichroism at the Co-L-2,L-3 edge, we have observed a ferromagnetic signal originating from the antiferromagnetic CoO shell. This gives direct evidence for the existence of rotatable interfacial uncompensated Co spins in the nominally antiferromagnetic CoO shell, thus supporting the uncompensated spin model as a microscopic description of the exchange bias mechanism. (literal)

Prodotto di

• Proprietà magnetiche, elettroniche e funzionali di aggregati di dimensione atomica (MD.P04.004.001) (Modulo)
• Institute of structure of matter (ISM) (Istituto)

Autore CNR

• ALESSANDRO BARLA (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of structure of matter (ISM) (Istituto)
• Proprietà magnetiche, elettroniche e funzionali di aggregati di dimensione atomica (MD.P04.004.001) (Modulo)

Autore CNR di

• ALESSANDRO BARLA (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nanoscale (Rivista)

Insieme di parole chiave di

• Parole chiave di "Direct observation of rotatable uncompensated spins in the exchange bias system Co/CoO-MgO" (Insieme di parole chiave)