Magnetic properties of superconducting phases NiBi and NiBi3 formed during pulsed laser deposition of Ni-Bi films

Liu, Liying; Xing, Yutao; Merino, I.L.C.; Franceschini, D. F.; Solórzano, I. G.; Baggio‐Saitovitch, E.

doi:10.1016/j.jmmm.2020.167275

Cited by 8 publications

(8 citation statements)

References 16 publications

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“…In addition, NiO phase is known to be antiferromagnetic in nature. 18 In Fig. 5(a) and (b) isothermal hysteresis loops of as-deposited (Ni/Bi) 2 and (Ni/Bi) 2 samples annealed at 500 1C are compared.…”

Section: Analysis Of Magnetic Propertiesmentioning

confidence: 99%

“…Recently, several groups have reported synthesis of NiBi 3 in thin film form. 9,15-17 Liu et al 18 have synthesised the Bi/Ni bilayer using pulsed laser deposition techniques at room temperature with varying thickness of Ni and Bi. They deposited Bi first followed by Ni.…”

Section: Introductionmentioning

confidence: 99%

“…This emphasized the effect of film thickness on the superconducting behaviour. In another piece of work, Liu et al 18 demonstrated that depositing Bi and Ni layers (thin films) by thermal evaporation method at 4.2 K gave rise to different superconducting behaviour. They cooled the sample to 4.2 K and deposited Ni on top of Bi layer.…”

Section: Introductionmentioning

confidence: 99%

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Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Das

Sahoo

Patra

et al. 2022

Phys. Chem. Chem. Phys.

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Section: Analysis Of Magnetic Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Das

Sahoo

Patra

et al. 2022

Phys. Chem. Chem. Phys.

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“…In contrast, NiBi 3 shows an interesting phenomenon called the coexistence of superconductivity and ferromagnetism (CSF), where the same electron is responsible for both magnetic and superconducting behavior. − So, synthesizing the pure phase of an NiBi 3 intermetallic compound in the form of thin films and filtering the Ni and Bi impurities still remain a challenge. There have been many reports on the synthesis of NiBi 3 by different methods, and the magnetic and superconducting behaviors depend on the methods of preparation. ,,− Further, different growth procedures result in mixed phases such as NiBi 3 with NiBi and trace Bi or trace Ni. The superconducting and magnetoresistance measurements of single crystals of NiBi 3 , grown by a self-flux method, is observed to be free of the NiBi phase and any other magnetic impurity, whereas ferromagnetic fluctuations exist on the surface of the crystal below 150 K .…”

Section: Introductionmentioning

confidence: 99%

Reaction-Diffusion-Driven Stoichiometric Gradient in Coevaporated Superconducting NiBi₃ Thin Films

Das

Senapati

Yadav³

et al. 2023

Crystal Growth & Design

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The intermetallic compound NiBi3 belongs to the interesting class of superconductors that are based on strong ferromagnetic elements. Although NiBi3 has been grown in single-crystal form and has also been demonstrated to form at the interface of Ni and Bi layers, uniform NiBi3 thin films have yet to appear in the literature. In this work, we have explored the codeposition method, wherein high-purity Ni and Bi metals are evaporated simultaneously at controlled rates, to study the dynamics involved in the formation of NiBi3 films. We have used the Rutherford backscattering spectrometry (RBS) technique to make a quantitative stoichiometric comparison of codeposited films grown at two different evaporation rates of Bi, while keeping the evaporation rate of Ni fixed. We find that, due to the highly diffusive nature of the Bi atoms in this system, the growth dynamics favors the formation of almost stoichiometric NiBi3 only at the top surface (few tens of nanometers) of the films, whereas there is a nonlinear stoichiometric variation toward the substrate. The average local bonding environment around Ni, studied by synchrotron-based X-ray absorption spectroscopy, agreed with the overall findings of RBS. Since the physical properties of NiBi3 are sensitive to the ratio of Ni and Bi, we find the superconducting transition and magnetic coercivity to be consistent with the above observations.

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“…В последнее время сверхпроводящие материалы широко применяются в различных областях для транспортировки электроэнергии [1], создания сильных магнитных полей [2], проведения прецизионных магнитных измерений [3], при исследованиях дальнего космоса [4] и др.…”

Section: Introductionunclassified

Effect of Heat Treatment on Changes in the Structure of YBCO Superconducting Powders

Rabadanova¹,

Палчаев²,

Рабаданов³

et al. 2021

HDSU

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Изготовлены порошки с номинальным содержанием фазы YBCO и оптимально насыщенные кислородом методом твердофазного синтеза с использованием оксидов Y 2 O 3 , BaCO 3 и CuO. Спекание образцов проводилось в температурном и временном интервале от 900 до 936 ºС в 7 этапов в течение ~10-25 часов на каждом этапе. Проведены комплексные исследования структуры, морфологии и спектров комбинационного рассеяния. Изготовленные образцы преимущественно обладают орторомбической сверхпроводящей фазой с высоким содержанием кислорода. Максимальное содержание соединения YBa 2 Cu 3 O 7-(до ~95 %) достигалось после спекания при 936 ºС. Спектры комбинационного рассеяния демонстрируют характерные для состава YBCO колебательные моды: режим O(4)-A g в интервале от ~479 до ~496 см -1 ; режим O(2, 3)-A g в области от ~436 см -1 до ~447 см -1 ; режим O(2, 3)-B lg в интервале от ~307.5 см -1 до ~334 см -1 . Выполнены оценки содержания кислорода в образцах различными методами. Установлено, что концентрация кислорода в межгранульных средах оказалась ниже в среднем на ~5 %, чем в объеме.

show abstract

Magnetic properties of superconducting phases NiBi and NiBi3 formed during pulsed laser deposition of Ni-Bi films

Cited by 8 publications

References 16 publications

Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Reaction-Diffusion-Driven Stoichiometric Gradient in Coevaporated Superconducting NiBi₃ Thin Films

Effect of Heat Treatment on Changes in the Structure of YBCO Superconducting Powders

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Magnetic properties of superconducting phases NiBi and NiBi3 formed during pulsed laser deposition of Ni-Bi films

Cited by 8 publications

References 16 publications

Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Phase evolution in thermally annealed Ni/Bi multilayers studied by X-ray absorption spectroscopy

Reaction-Diffusion-Driven Stoichiometric Gradient in Coevaporated Superconducting NiBi3 Thin Films

Effect of Heat Treatment on Changes in the Structure of YBCO Superconducting Powders

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Reaction-Diffusion-Driven Stoichiometric Gradient in Coevaporated Superconducting NiBi₃ Thin Films