Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface
Samo za registrovane korisnike
2016
Autori
Polushkin, N. I.Duarte, A. C.
Conde, O.
Bundaleski, Nenad
Dias, C.
Ventura, J. O.
Araujo, J. P.
Kakazei, G. N.
Lupo, P.
Adeyeye, A. O.
Cardoso, S.
Članak u časopisu (Objavljena verzija)
,
© The Royal Society of Chemistry 2016
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
It is well established that electrical methods, such as the application of a high-density (10(10)-10(11) A m(-2)) current, can be employed for the switching of magnetization in thin ferromagnetic films and hetero-structures after their patterning at the nanoscale. We find that magnetization is robustly switchable, i.e., at macroscopic scales (up to a few millimeters in lateral directions), in a single similar to 30 nm-thick layer of alpha-Fe upon discharging a capacitor through the sample. Interestingly, samples sputtered at enhanced base pressures (similar to 10(-6) mbar) exhibited much lower switching thresholds with no bias field, while their electrical conductivity is anomalously high ( higher than that in bulk of alpha-Fe). We argue that the observed enhancement of conduction relates to the mixed oxide/oxyhydroxide (FeO/FeOOH) layer formed naturally on the top of our alpha-Fe films. This provides an explanation for the magnetization switching upon discharging a capacitor in terms ...of the Oersted field generated by the discharge current. We analyze the ratio needed between the conductions of the FeO/FeOOH layer and the underlying alpha-Fe for the effective action of the Oersted field.
Izvor:
Journal of Materials Chemistry. C, 2016, 4, 33, 7751-7755Finansiranje / projekti:
- Portuguese Foundation for Science and Technology (FCT) [PTDC/FIS/121588/2010], program Ciencia, FEDER, ON2, FCT through the Associated Laboratory - IN, FSE/POPH, FCT [SFRH/BD/101661/2014], Investigador FCT program, [POCI-01-0145-FEDER-016623], [PTDC/CTM-NAN/3146/2014], [EXPL/IF/00981/2013]
DOI: 10.1039/c6tc00700g
ISSN: 2050-7526; 2050-7534
WoS: 000382020800006
Scopus: 2-s2.0-84983680189
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Polushkin, N. I. AU - Duarte, A. C. AU - Conde, O. AU - Bundaleski, Nenad AU - Dias, C. AU - Ventura, J. O. AU - Araujo, J. P. AU - Kakazei, G. N. AU - Lupo, P. AU - Adeyeye, A. O. AU - Cardoso, S. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1216 AB - It is well established that electrical methods, such as the application of a high-density (10(10)-10(11) A m(-2)) current, can be employed for the switching of magnetization in thin ferromagnetic films and hetero-structures after their patterning at the nanoscale. We find that magnetization is robustly switchable, i.e., at macroscopic scales (up to a few millimeters in lateral directions), in a single similar to 30 nm-thick layer of alpha-Fe upon discharging a capacitor through the sample. Interestingly, samples sputtered at enhanced base pressures (similar to 10(-6) mbar) exhibited much lower switching thresholds with no bias field, while their electrical conductivity is anomalously high ( higher than that in bulk of alpha-Fe). We argue that the observed enhancement of conduction relates to the mixed oxide/oxyhydroxide (FeO/FeOOH) layer formed naturally on the top of our alpha-Fe films. This provides an explanation for the magnetization switching upon discharging a capacitor in terms of the Oersted field generated by the discharge current. We analyze the ratio needed between the conductions of the FeO/FeOOH layer and the underlying alpha-Fe for the effective action of the Oersted field. T2 - Journal of Materials Chemistry. C T1 - Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface VL - 4 IS - 33 SP - 7751 EP - 7755 DO - 10.1039/c6tc00700g ER -
@article{ author = "Polushkin, N. I. and Duarte, A. C. and Conde, O. and Bundaleski, Nenad and Dias, C. and Ventura, J. O. and Araujo, J. P. and Kakazei, G. N. and Lupo, P. and Adeyeye, A. O. and Cardoso, S.", year = "2016", abstract = "It is well established that electrical methods, such as the application of a high-density (10(10)-10(11) A m(-2)) current, can be employed for the switching of magnetization in thin ferromagnetic films and hetero-structures after their patterning at the nanoscale. We find that magnetization is robustly switchable, i.e., at macroscopic scales (up to a few millimeters in lateral directions), in a single similar to 30 nm-thick layer of alpha-Fe upon discharging a capacitor through the sample. Interestingly, samples sputtered at enhanced base pressures (similar to 10(-6) mbar) exhibited much lower switching thresholds with no bias field, while their electrical conductivity is anomalously high ( higher than that in bulk of alpha-Fe). We argue that the observed enhancement of conduction relates to the mixed oxide/oxyhydroxide (FeO/FeOOH) layer formed naturally on the top of our alpha-Fe films. This provides an explanation for the magnetization switching upon discharging a capacitor in terms of the Oersted field generated by the discharge current. We analyze the ratio needed between the conductions of the FeO/FeOOH layer and the underlying alpha-Fe for the effective action of the Oersted field.", journal = "Journal of Materials Chemistry. C", title = "Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface", volume = "4", number = "33", pages = "7751-7755", doi = "10.1039/c6tc00700g" }
Polushkin, N. I., Duarte, A. C., Conde, O., Bundaleski, N., Dias, C., Ventura, J. O., Araujo, J. P., Kakazei, G. N., Lupo, P., Adeyeye, A. O.,& Cardoso, S.. (2016). Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface. in Journal of Materials Chemistry. C, 4(33), 7751-7755. https://doi.org/10.1039/c6tc00700g
Polushkin NI, Duarte AC, Conde O, Bundaleski N, Dias C, Ventura JO, Araujo JP, Kakazei GN, Lupo P, Adeyeye AO, Cardoso S. Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface. in Journal of Materials Chemistry. C. 2016;4(33):7751-7755. doi:10.1039/c6tc00700g .
Polushkin, N. I., Duarte, A. C., Conde, O., Bundaleski, Nenad, Dias, C., Ventura, J. O., Araujo, J. P., Kakazei, G. N., Lupo, P., Adeyeye, A. O., Cardoso, S., "Electrical switching of magnetization in a layer of alpha-Fe with a naturally hydroxidized surface" in Journal of Materials Chemistry. C, 4, no. 33 (2016):7751-7755, https://doi.org/10.1039/c6tc00700g . .