Effect of Heat Treatment on the Phase Composition and Magnetic Properties of Single-Layer Nanostructures (ni80fe20)0,6mn0,4

I. V. Blinov

doi:10.17804/2410-9908.2018.4.006-013

I. V. Blinov

EFFECT OF HEAT TREATMENT ON THE PHASE COMPOSITION AND MAGNETIC PROPERTIES OF SINGLE-LAYER NANOSTRUCTURES (NI₈₀FE₂₀)_0,6MN_0,4

DOI: 10.17804/2410-9908.2018.4.006-013

The influence of heat treatment on the phase composition and magnetic properties of single-layer Ni-Fe-Mn films are investigated. Samples of (Ni80Fe20)60Mn40(50nm)/Ta (5nm) were prepared by direct current magnetron sputtering on glass substrates. It is shown that annealing leads to a phase separation of the fcc solid solution of Ni-Fe-Mn on permalloy and manganese. In annealed samples, when the sample is cooled in a magnetic field, unidirectional anisotropy is formed due to the exchange interaction of the ferromagnetic regions of Ni80Fe20 and the antiferromagnetic regions of Mn. The exchange bias of the magnetic hysteresis loop is Hex = 317 Oe.

Acknowledgement: The work was done within the frame of the state assignment on the subject “Spin”, No. АААА-А18-118020290104-2, and project No. 18-10-2-37 of the UB RAS Program. Magnetic measurements were made on the equipment of the magnetic measurement department of the Test Center of Nanotechnologies and Advanced Materials collective use center; X-ray studies were conducted in the X-ray analysis department of the TC NAM collective use center.

Keywords: phase separation, Ni-Fe-Mn alloy, permalloy, manganese, unidirectional anisotropy

References:

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$Fig. 1. X-ray diffraction patterns of the glass/(Ni80Fe20)60Mn40(50nm)/Ta(5nm) sample before (a) and after (b) thermomagnetic treatment at Tann = 400 ºС for 3 h in CrKα radiation$

И. В. Блинов

ВЛИЯНИЕ ТЕРМООБРАБОТКИ НА ФАЗОВЫЙ СОСТАВ И МАГНИТНЫЕ СВОЙСТВА ОДНОСЛОЙНЫХ НАНОСТРУКТУР (NI₈₀FE₂₀)_0,6MN_0,4

В работе исследовано влияние термообработки на фазовый состав и магнитные свойства однослойных пленок Ni-Fe-Mn. Образцы (Ni80Fe20)60Mn40(50нм)/Ta(5нм) были приготовлены магнетронным напылением на постоянном токе на стеклянные подложки. Показано, что отжиг приводит к распаду ГЦК твердого раствора Ni-Fe-Mn на пермаллой (Ni80Fe20)
и марганец. В отожженных образцах при охлаждении образца в магнитном поле формируется однонаправленная анизотропия, обусловленная обменным взаимодействием ферромагнитных областей Ni80Fe20 и антиферромагнитных областей Mn. Смещение петли магнитного гистерезиса составляет Hex = 317 Э.

Благодарность: Работа выполнена в рамках государственного задания по теме «Спин» №АААА-А18-118020290104-2 и проекту №18-10-2-37 Программы УрО РАН. Магнитные измерения выполнены на оборудовании ОМИ ЦКП ИЦ НПМ, рентгенографические исследования выполнены в ОРА ЦКП ИЦ НПМ.

Ключевые слова: фазовое разделение, сплав Ni-Fe-Mn, пермаллой, марганец, однонаправленная анизотропия

Библиография:

Giant Magnetoresistance: Basic Concepts, Microstructure, Magnetic Interactions and Applications / I. Ennen, D. Kappe, T. Rempel, C. Glenske, A. Hütten // Sensors. – 2016. Vol. 16, no. 6. – P. 904. – DOI: 10.3390/s16060904.
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Formation of Ordered NiFeMn Antiferromagnetic Phase in Permalloy/Manganese Bilayers in the Course of Thermomagnetic Treatment / I. V. Blinov, T. P. Krinitsyna, A. V. Korolev, S. A. Matveev, N. K. Arkhipova, M. A. Milyaev, V. V. Popov, V. V. Ustinov // Physics of Metals and Metallography. – 2014. – Vol. 115. – P. 335–341. – DOI: 10.1134/S0031918X14040036.
Yoon C. S., Kim S. J., Kim C. R. Structure and magnetic properties of termally annealed (Ni80Fe20)1-xMnx thin films // J. Appl. Phys. – 2003. – Vol. 94. – No. 1. – P. 539–543. – DOI: 10.1063/1.1583151.
Magnetic properties of Phase-Separated (Ni80Fe20)1-xMnx Thin Magnetic Films / S. J. Kim, D. H. Lim, Suk Jun Kim, S. Chong, C. S. Yoon, and K. Chang // IEEE Trans. Magn. – 2003. – Vol. 39, no. 5. – P. 2690–2692. – DOI: 10.1109/TMAG.2003.815561.
Effect of material selection and background impurity on interface property and resulted CIP-GMR performance / Xilin Peng, Augusto Morrone, Konstantin Nikolaev, Mark Kief, Mark Ostrowski // Journal of Magnetism and Magnetic Materials – 2009. – Vol. 321 – P. 2902–2910. – DOI: 10.1016/j.jmmm.20 09.0 4.047.

Библиографическая ссылка на статью

Blinov I. V. Effect of Heat Treatment on the Phase Composition and Magnetic Properties of Single-Layer Nanostructures (ni₈₀fe₂₀)_0,6mn_0,4 // Diagnostics, Resource and Mechanics of materials and structures. - 2018. - Iss. 4. - P. 6-13. -
DOI: 10.17804/2410-9908.2018.4.006-013. -
URL: http://dream-journal.org/issues/2018-4/2018-4_187.html
(accessed: 21.12.2024).

I. V. Blinov