Magnetism and magnetooptics features of Zn1-xCoxOy thin films grown by pulsed laser deposition

Kuz’mina, A.S.; Lotin, A. A.; Novodvorsky, O. A.; Перов, Н. С.; Ганьшина, Е. А.; Makarova, L.A.; Семисалова, А.С.; Shneider, A. G.; Kuz'min, M.P.; Kolesnikov, S. S.

doi:10.1016/j.matchemphys.2017.06.015

Cited by 13 publications

(7 citation statements)

References 33 publications

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“…Unless mentioned otherwise, MBJ+SOC method is used in all our spectral calculations. The magneto-optical transversal Kerr effect in Zn 1-x Co x O (x=0.14 and 0.28) with Zn vacancies is calculated in the framework of the relativistic WIEN2k method [1] which takes into account the effect of spinorbit coupling in the second variational procedure and the MBJ exchange-correlation potential.…”

Section: Calculational Methodsmentioning

confidence: 99%

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Electronic and magneto-optical properties of ZnO:Co

et al. 2018

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High-quality ZnO:Co thin films were synthesized on the sapphire (0001) substrates by pulsed laser deposition. XRD result reveals that the Zn1-xCoxO films are of wurtzite-type crystal structure with x up to x = 0.35. The structural, optical and magnetic properties of ZnO:Co thin films are studied by experiments and theoretical calculations. Electronic structure of ZnO:Co with native defects are studied by the first-principles density functional theory. The experimental data and theoretical data have demonstrated quite good agreement. The optical and magneto-optical properties, namely, on-and off-diagonal conductivity tensor and the transversal Kerr effect (TKE), are calculated for comparison with available experimental data. The origin of observed TKE peaks is discussed..

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Section: Calculational Methodsmentioning

confidence: 99%

“…In DMS the concentration is limited by low solubility of magnetic impurities in these materials. In this paper we study ab initio electronic and magneto-optical properties of ZnO:Co co-doped by native defects and compare them with available experimental data [1,2].…”

Section: Introductionmentioning

confidence: 99%

Electronic and magneto-optical properties of ZnO:Co

et al. 2018

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“…At present there is no single idea about the nature of a high-temperature ferromagnetism in thin Zn 1-x Co x O y films. Early we have already demonstrated the ferromagnetic properties of thin Zn 1-x Co x O y films at room temperature [6]. The purpose of present paper is investigation of oxygen deficiency effect on structural, transport and magnetic properties of thin Zn 1-x Co x O y films in the range of cobalt concentration from 0 to 45 at.…”

Section: Introductionmentioning

confidence: 92%

“…Synthesis of films was carried out on c-sapphire substrates at 450 °C temperature [6]. The residual pressure in the vacuum chamber was P ~ 5*10 -6 Torr that provided an oxygen deficit in films up to 10% (0.9<у<1) and, therefore, the electron conductivity [7] in the range of cobalt concentration x = 0÷0.45.…”

Section: The Synthesis Of Samplesmentioning

confidence: 99%

Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films

et al. 2018

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Abstract. The features of the structural, transport and magnetic properties of thin Zn 1-x Co x O y films (x=0-0.45), fabricated on с-sapphire substrates by the pulsed laser deposition method are studied. It is found that the transport and ferromagnetic properties of the wurtzite Zn 1-x Co x O y films nonmonotonously depend on Co concentration at room temperature. For the Zn 0.87 Co 0.13 Oy film, the strongest ferromagnetic signal is observed that is caused by formation of the greatest number of metallic Co clusters. A further increase of doping impurity concentration in the films leads to the oxidation of metallic Co and formation of the paramagnetic Co 3 O 4 phase, in consequence of which the ferromagnetic signal subsides.

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“…Представляет интерес исследовать возможность создания ферромагнитных полупроводников А 3 В 5 : Fe альтернативным методом: методом импульсного лазерного нанесения (ИЛН), который был успешно использован для формирования других соединений, например, А 3 В 5 : Mn [10] и ZnO : Co [11,12].…”

Section: Introductionunclassified

Исследование Особенностей Формирования И Свойств Полупроводников А-=sup=-3-=/Sup=-В-=sup=-5-=/Sup=-, Сильно Легированных Железом

Данилов¹,

Кудрин²,

Лесников³

et al. 2018

Физика Твердого Тела

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Экспериментально исследованы слои полупроводников InAs, InSb и GaSb, сильнолегированных железом в процессе выращивания методом импульсного лазерного нанесения. Установлено, что наилучшими температурами для формирования слоев на подложках GaAs(100) являются 250 • C (InSb : Fe), 300 • C (InAs : Fe) и 350 • C (GaSb : Fe). При высоких концентрациях Fe (более 10 at.%) слои обладают ферромагнитными свойствами, выражающимися в появлении петли гистерезиса на магнитополевых зависимостях сопротивления Холла, отрицательного магнетосопротивления и в некоторых случаях-намагниченности ферромагнитного типа при комнатной температуре измерений. Атомы железа не изменяют тип проводимости слоев; при этом слои InAs : Fe, InSb : Fe обладают проводимостью n-типа, а GaSb : Fep-типа за счет собственных точечных дефектов. Работа выполнена в рамках реализации государственного задания-проект № 8.1751.2017/ПЧ Минобрнауки России и при поддержке РФФИ (гранты № 17-37-80008_мол_эв_а, 16-07-01102_а).

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Magnetism and magnetooptics features of Zn1-xCoxOy thin films grown by pulsed laser deposition

Cited by 13 publications

References 33 publications

Electronic and magneto-optical properties of ZnO:Co

Electronic and magneto-optical properties of ZnO:Co

Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films

Исследование Особенностей Формирования И Свойств Полупроводников А-=sup=-3-=/Sup=-В-=sup=-5-=/Sup=-, Сильно Легированных Железом

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Magnetism and magnetooptics features of Zn1-xCoxOy thin films grown by pulsed laser deposition

Cited by 13 publications

References 33 publications

Electronic and magneto-optical properties of ZnO:Co

Electronic and magneto-optical properties of ZnO:Co

Influence of oxygen vacancies on magnetic and transport properties of thin Zn1-xCoxOy films

Исследование Особенностей Формирования И Свойств Полупроводников А-=sup=-3-=/Sup=-В-=sup=-5-=/Sup=-, Сильно Легированных Железом

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Influence of oxygen vacancies on magnetic and transport properties of thin Zn_1-xCo_xO_y films