Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization
Само за регистроване кориснике
2014
Аутори
Kasiuk, J. V.Fedotova, J. A.
Przewoznik, J.
Zukrowski, J.
Sikora, M.
Kapusta, Cz
Grce, Ana
Milosavljević, Momir
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The relation between nanoscale structure, local atomic order and magnetic properties of (FeCoZr)(x)(CaF2)(100-x) (29 LT = x LT = 73 at. %) granular films is studied as a function of metal/insulator fraction ratio. The films of a thickness of 1-6 mu m were deposited on Al-foils and glass-ceramic substrates, by ion sputtering of targets of different metal/insulator contents. Structural characterization with X-ray and electron diffraction as well as transmission electron microscopy revealed that the films are composed of isolated nanocrystalline bcc alpha-FeCo(Zr) alloy and insulating fcc CaF2 matrix. They grow in a columnar structure, where elongated metallic nanograins are arranged on top of each other within the columns almost normal to the substrate surface. Mossbauer spectroscopy and magnetometry results indicate that their easy magnetization axes are oriented at an angle of 65 degrees-74 degrees to the surface in films with x between 46 and 74, above the electrical percolation thres...hold, which is attributed to the growth-induced shape anisotropy. Interatomic distances characteristic for metallic state of alpha-FeCo(Zr) nanograins were revealed by X-ray Absorption Spectroscopy. The results show a lack of surface oxidation of the alloy nanograins, so the growth-induced orientation of nanograins in the films cannot be attributed to this effect. The study is among the first to report a growth-induced non-planar magnetic anisotropy in metal/insulator granular films above the percolation threshold and to reveal the origin of it. (C) 2014 AIP Publishing LLC.
Извор:
Journal of Applied Physics, 2014, 116, 4Финансирање / пројекти:
- SILAMPS - Silicon integrated lasers and optical amplifiers (EU-FP7-226470)
- Физички процеси у синтези нових наноструктурних материјала (RS-MESTD-Basic Research (BR or ON)-171023)
- initiative ELISA: EU Support of Access to Synchrotrons/FELs in Europe, Belarusian State program Functional materials [1.16], Polish Ministry of Science and Higher Education, EU COST Action [MP0903 Nanoalloys]
DOI: 10.1063/1.4891016
ISSN: 0021-8979; 1089-7550
WoS: 000340710700077
Scopus: 2-s2.0-84905843024
Колекције
Институција/група
VinčaTY - JOUR AU - Kasiuk, J. V. AU - Fedotova, J. A. AU - Przewoznik, J. AU - Zukrowski, J. AU - Sikora, M. AU - Kapusta, Cz AU - Grce, Ana AU - Milosavljević, Momir PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/77 AB - The relation between nanoscale structure, local atomic order and magnetic properties of (FeCoZr)(x)(CaF2)(100-x) (29 LT = x LT = 73 at. %) granular films is studied as a function of metal/insulator fraction ratio. The films of a thickness of 1-6 mu m were deposited on Al-foils and glass-ceramic substrates, by ion sputtering of targets of different metal/insulator contents. Structural characterization with X-ray and electron diffraction as well as transmission electron microscopy revealed that the films are composed of isolated nanocrystalline bcc alpha-FeCo(Zr) alloy and insulating fcc CaF2 matrix. They grow in a columnar structure, where elongated metallic nanograins are arranged on top of each other within the columns almost normal to the substrate surface. Mossbauer spectroscopy and magnetometry results indicate that their easy magnetization axes are oriented at an angle of 65 degrees-74 degrees to the surface in films with x between 46 and 74, above the electrical percolation threshold, which is attributed to the growth-induced shape anisotropy. Interatomic distances characteristic for metallic state of alpha-FeCo(Zr) nanograins were revealed by X-ray Absorption Spectroscopy. The results show a lack of surface oxidation of the alloy nanograins, so the growth-induced orientation of nanograins in the films cannot be attributed to this effect. The study is among the first to report a growth-induced non-planar magnetic anisotropy in metal/insulator granular films above the percolation threshold and to reveal the origin of it. (C) 2014 AIP Publishing LLC. T2 - Journal of Applied Physics T1 - Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization VL - 116 IS - 4 DO - 10.1063/1.4891016 ER -
@article{ author = "Kasiuk, J. V. and Fedotova, J. A. and Przewoznik, J. and Zukrowski, J. and Sikora, M. and Kapusta, Cz and Grce, Ana and Milosavljević, Momir", year = "2014", abstract = "The relation between nanoscale structure, local atomic order and magnetic properties of (FeCoZr)(x)(CaF2)(100-x) (29 LT = x LT = 73 at. %) granular films is studied as a function of metal/insulator fraction ratio. The films of a thickness of 1-6 mu m were deposited on Al-foils and glass-ceramic substrates, by ion sputtering of targets of different metal/insulator contents. Structural characterization with X-ray and electron diffraction as well as transmission electron microscopy revealed that the films are composed of isolated nanocrystalline bcc alpha-FeCo(Zr) alloy and insulating fcc CaF2 matrix. They grow in a columnar structure, where elongated metallic nanograins are arranged on top of each other within the columns almost normal to the substrate surface. Mossbauer spectroscopy and magnetometry results indicate that their easy magnetization axes are oriented at an angle of 65 degrees-74 degrees to the surface in films with x between 46 and 74, above the electrical percolation threshold, which is attributed to the growth-induced shape anisotropy. Interatomic distances characteristic for metallic state of alpha-FeCo(Zr) nanograins were revealed by X-ray Absorption Spectroscopy. The results show a lack of surface oxidation of the alloy nanograins, so the growth-induced orientation of nanograins in the films cannot be attributed to this effect. The study is among the first to report a growth-induced non-planar magnetic anisotropy in metal/insulator granular films above the percolation threshold and to reveal the origin of it. (C) 2014 AIP Publishing LLC.", journal = "Journal of Applied Physics", title = "Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization", volume = "116", number = "4", doi = "10.1063/1.4891016" }
Kasiuk, J. V., Fedotova, J. A., Przewoznik, J., Zukrowski, J., Sikora, M., Kapusta, C., Grce, A.,& Milosavljević, M.. (2014). Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization. in Journal of Applied Physics, 116(4). https://doi.org/10.1063/1.4891016
Kasiuk JV, Fedotova JA, Przewoznik J, Zukrowski J, Sikora M, Kapusta C, Grce A, Milosavljević M. Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization. in Journal of Applied Physics. 2014;116(4). doi:10.1063/1.4891016 .
Kasiuk, J. V., Fedotova, J. A., Przewoznik, J., Zukrowski, J., Sikora, M., Kapusta, Cz, Grce, Ana, Milosavljević, Momir, "Growth-induced non-planar magnetic anisotropy in FeCoZr-CaF2 nanogranular films: Structural and magnetic characterization" in Journal of Applied Physics, 116, no. 4 (2014), https://doi.org/10.1063/1.4891016 . .