Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films

V. Ukleev, R. Moubah, D. Baranov, S. V. Gastev, B. Krichevtsov, E. Velichko, N. Kulesh, Yu Chetverikov, S. V. Grigoriev

Результат исследований: Научные публикации в периодических изданияхстатья

1 цитирование (Scopus)

Выдержка

We investigate the magnetic anisotropy and domain structure of amorphous TbxCo(1−x) films grown in external in-plane magnetic field by high-frequency ion sputtering. Films with different thicknesses 100 and 500 nm and rare-earth element concentrations x = 12 % and x = 34 % present strong imprinted in-plane uniaxial anisotropy. Measurements of magnetic properties and domain structure imaging were performed by means of longitudinal and polar magneto-optical Kerr effect (MOKE). The coercivity fields increase by an order of magnitude for the higher Tb concentration and increase with film thickness (Hc along the hard axis are 495, and 580 Oe, for 100 and 500 nm, with x = 34 % and 65, and 95 Oe for 100 and 500 nm with x = 12 %, respectively). Polar MOKE measurements revealed the existence of an out-of-plane magnetization component for the films with a Tb concentration of 34 % in lower fields. Large-scale domain structure of TbCo films with imprinted anisotropy was also studied as a function of applied field. Kerr imaging shows a zigzag domain structure of Tb12Co88 films, while no domains were found in Tb34Co66 samples. We also demonstrate that the zigzag angle depends on the film thickness. We suggest that domain structure in these films is determined by the interplay of imprinted and local magnetic anisotropies as well as exchange interaction.

Язык оригиналаанглийский
Страницы (с-по)3571-3577
Число страниц7
ЖурналJournal of Superconductivity and Novel Magnetism
Том28
Номер выпуска12
DOI
СостояниеОпубликовано - 1 дек 2015

Отпечаток

Magnetic anisotropy
Amorphous films
anisotropy
Optical Kerr effect
Magnetic domains
Kerr effects
Film thickness
Anisotropy
film thickness
Imaging techniques
Exchange interactions
magnetic domains
Coercive force
Rare earth elements
coercivity
Sputtering
Magnetization
Magnetic properties
rare earth elements
sputtering

Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Физика конденсатов

Цитировать

Ukleev, V. ; Moubah, R. ; Baranov, D. ; Gastev, S. V. ; Krichevtsov, B. ; Velichko, E. ; Kulesh, N. ; Chetverikov, Yu ; Grigoriev, S. V. / Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films. В: Journal of Superconductivity and Novel Magnetism. 2015 ; Том 28, № 12. стр. 3571-3577.
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title = "Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films",
abstract = "We investigate the magnetic anisotropy and domain structure of amorphous TbxCo(1−x) films grown in external in-plane magnetic field by high-frequency ion sputtering. Films with different thicknesses 100 and 500 nm and rare-earth element concentrations x = 12 {\%} and x = 34 {\%} present strong imprinted in-plane uniaxial anisotropy. Measurements of magnetic properties and domain structure imaging were performed by means of longitudinal and polar magneto-optical Kerr effect (MOKE). The coercivity fields increase by an order of magnitude for the higher Tb concentration and increase with film thickness (Hc along the hard axis are 495, and 580 Oe, for 100 and 500 nm, with x = 34 {\%} and 65, and 95 Oe for 100 and 500 nm with x = 12 {\%}, respectively). Polar MOKE measurements revealed the existence of an out-of-plane magnetization component for the films with a Tb concentration of 34 {\%} in lower fields. Large-scale domain structure of TbCo films with imprinted anisotropy was also studied as a function of applied field. Kerr imaging shows a zigzag domain structure of Tb12Co88 films, while no domains were found in Tb34Co66 samples. We also demonstrate that the zigzag angle depends on the film thickness. We suggest that domain structure in these films is determined by the interplay of imprinted and local magnetic anisotropies as well as exchange interaction.",
keywords = "Alloys and films, Anisotropy, Domains, Hard magnetic materials",
author = "V. Ukleev and R. Moubah and D. Baranov and Gastev, {S. V.} and B. Krichevtsov and E. Velichko and N. Kulesh and Yu Chetverikov and Grigoriev, {S. V.}",
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Ukleev, V, Moubah, R, Baranov, D, Gastev, SV, Krichevtsov, B, Velichko, E, Kulesh, N, Chetverikov, Y & Grigoriev, SV 2015, 'Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films', Journal of Superconductivity and Novel Magnetism, том. 28, № 12, стр. 3571-3577. https://doi.org/10.1007/s10948-015-3172-9

Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films. / Ukleev, V.; Moubah, R.; Baranov, D.; Gastev, S. V.; Krichevtsov, B.; Velichko, E.; Kulesh, N.; Chetverikov, Yu; Grigoriev, S. V.

В: Journal of Superconductivity and Novel Magnetism, Том 28, № 12, 01.12.2015, стр. 3571-3577.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films

AU - Ukleev, V.

AU - Moubah, R.

AU - Baranov, D.

AU - Gastev, S. V.

AU - Krichevtsov, B.

AU - Velichko, E.

AU - Kulesh, N.

AU - Chetverikov, Yu

AU - Grigoriev, S. V.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - We investigate the magnetic anisotropy and domain structure of amorphous TbxCo(1−x) films grown in external in-plane magnetic field by high-frequency ion sputtering. Films with different thicknesses 100 and 500 nm and rare-earth element concentrations x = 12 % and x = 34 % present strong imprinted in-plane uniaxial anisotropy. Measurements of magnetic properties and domain structure imaging were performed by means of longitudinal and polar magneto-optical Kerr effect (MOKE). The coercivity fields increase by an order of magnitude for the higher Tb concentration and increase with film thickness (Hc along the hard axis are 495, and 580 Oe, for 100 and 500 nm, with x = 34 % and 65, and 95 Oe for 100 and 500 nm with x = 12 %, respectively). Polar MOKE measurements revealed the existence of an out-of-plane magnetization component for the films with a Tb concentration of 34 % in lower fields. Large-scale domain structure of TbCo films with imprinted anisotropy was also studied as a function of applied field. Kerr imaging shows a zigzag domain structure of Tb12Co88 films, while no domains were found in Tb34Co66 samples. We also demonstrate that the zigzag angle depends on the film thickness. We suggest that domain structure in these films is determined by the interplay of imprinted and local magnetic anisotropies as well as exchange interaction.

AB - We investigate the magnetic anisotropy and domain structure of amorphous TbxCo(1−x) films grown in external in-plane magnetic field by high-frequency ion sputtering. Films with different thicknesses 100 and 500 nm and rare-earth element concentrations x = 12 % and x = 34 % present strong imprinted in-plane uniaxial anisotropy. Measurements of magnetic properties and domain structure imaging were performed by means of longitudinal and polar magneto-optical Kerr effect (MOKE). The coercivity fields increase by an order of magnitude for the higher Tb concentration and increase with film thickness (Hc along the hard axis are 495, and 580 Oe, for 100 and 500 nm, with x = 34 % and 65, and 95 Oe for 100 and 500 nm with x = 12 %, respectively). Polar MOKE measurements revealed the existence of an out-of-plane magnetization component for the films with a Tb concentration of 34 % in lower fields. Large-scale domain structure of TbCo films with imprinted anisotropy was also studied as a function of applied field. Kerr imaging shows a zigzag domain structure of Tb12Co88 films, while no domains were found in Tb34Co66 samples. We also demonstrate that the zigzag angle depends on the film thickness. We suggest that domain structure in these films is determined by the interplay of imprinted and local magnetic anisotropies as well as exchange interaction.

KW - Alloys and films

KW - Anisotropy

KW - Domains

KW - Hard magnetic materials

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U2 - 10.1007/s10948-015-3172-9

DO - 10.1007/s10948-015-3172-9

M3 - Article

AN - SCOPUS:84947025329

VL - 28

SP - 3571

EP - 3577

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

SN - 1557-1939

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Ukleev V, Moubah R, Baranov D, Gastev SV, Krichevtsov B, Velichko E и соавт. Imprinted Magnetic Anisotropy and Zigzag Domain Structure of Amorphous TbCo Films. Journal of Superconductivity and Novel Magnetism. 2015 Дек. 1;28(12):3571-3577. https://doi.org/10.1007/s10948-015-3172-9