Magnetic and electrical properties of Fe90Ta10 thin films

Shaji, Surabhi; Mucha, Nikhil Reddy; Majumdar, A. K.; Binek, Christian; Kebede, A.; Kumar, Dhananjay

doi:10.1016/j.jmmm.2019.165446

Cited by 10 publications

(5 citation statements)

References 33 publications

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“…A large number of white droplet shaped clusters are seen on the extremely smooth film surface which is evident from the SEM images. The absence of grains even at high magnification reveals the amorphous nature of the film which supports the XRD data reported in our main article [1]. EDX analysis was carried out on those droplets to confirm the material and composition by using the focused surface mapping technique and a point-by-point method.…”

Section: Datasupporting

confidence: 85%

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Morphological data on soft ferromagnetic Fe90Ta10 thin films

et al. 2019

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Iron-tantalum (Fe–Ta) thin films were synthesized on silicon (Si) (100) substrates using a pulsed laser deposition (PLD) technique. For the analysis of all reported data, please refer to our main article “Magnetic and electrical properties of Fe90Ta10 thin films [1]”. Morphological data confirm the amorphous nature of the film. Mesokurtic surface of the film was revealed using atomic force microscopy (AFM) analysis. The compositions of target and films were determined using x-ray fluorescence (XRF) data. The composition of Fe–Ta clusters, observed on the film surface, was measured using energy dispersive x-ray (EDX) analysis.

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Section: Datasupporting

confidence: 85%

“…The temperature dependent magnetization at four fields (0.1T–3 T) is shown in Fig. 4 [1]. These magnetization (M) versus temperature (T) data were fitted to the following equation,…”

Section: Datamentioning

confidence: 99%

Morphological data on soft ferromagnetic Fe90Ta10 thin films

et al. 2019

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“…Some other parameters specific to our PLD experiments include substrate temperatures of 400 °C, oxygen pressure in the range of 5–25 m Torr, and the laser energy density of 2 J/cm 2 . The details of our PLD setup are described elsewhere. ,,− The crystallographic studies and phase purity of TiNO films were carried out using Bruker D8 advanced X-ray diffractometer. X-ray photoelectron spectroscopy (XPS) was performed using a Thermo Scientific (Waltham, MA, USA) model k alpha XPS instrument.…”

Section: Methodsmentioning

confidence: 99%

High-Performance Titanium Oxynitride Thin Films for Electrocatalytic Water Oxidation

Mucha

Som

Choi

et al. 2020

ACS Appl. Energy Mater.

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TiN x O y (TiNO) thin films with superior electrochemical properties have been synthesized in situ using a pulsed laser deposition method and a varied oxygen partial pressure from 5 to 25 mTorr. The electrochemical overpotential of these TiNO films for water oxidation was found to be as low as 290 mV at 10 mA/cm2, which is among the lowest overpotential values reported. The Tafel slopes, indicative of a rate of increase of electrode potential with respect to current, for these films are determined to be in the range of 85–57 mV/decade. These results further demonstrate the superiority of TiNO thin film as electrocatalyst for water oxidation to generate fossil-free fuels. The improvement in the electrocatalytic behavior of the semiconducting TiNO thin films is explained based on an adjustment in the valence band maximum edge and an enhancement in the number of electrochemically active sites. Both effects are realized by the substitution of N by O, forming a TiNO lattice that is isostructural with the rock-salt TiN lattice. These findings appear to assume significant importance in light of water electrolysis to produce fuels for the development of environmentally friendly power sources.

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“…This means that current science and technology may be at the cusp of major developments that can fundamentally change our life for many decades to come. Low-dimensional systems, in particular two-dimensional (2D) systems of electrons are seen as some of the most fascinating systems for meeting the technological challenges of the future [1][2][3][4][5]. The great interest in 2D systems of electrons stems from the fact that the combination of low-dimensionality, confinement, discreteness of the electron's charge, electron's quantum spin and interaction/correlation effects can lead to very intriguing quantum phenomena [6,7].…”

Section: Introductionmentioning

confidence: 99%

A Charged Particle with Anisotropic Mass in a Perpendicular Magnetic Field–Landau Gauge

Ciftja

2024

Symmetry

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The loss of any symmetry in a system leads to quantum problems that are typically very difficult to solve. Such a situation arises for particles with anisotropic mass, like electrons in various semiconductor host materials, where it is known that they may have an anisotropic effective mass. In this work, we consider the quantum problem of a spinless charged particle with anisotropic mass in two dimensions and study the resulting energy and eigenstate spectrum in a uniform constant perpendicular magnetic field when a Landau gauge is adopted. The exact analytic solution to the problem is obtained for arbitrary values of the anisotropic mass using a mathematical technique that relies on the scaling of the original coordinates. The characteristic features of the energy spectrum and corresponding eigenstate wave functions are analyzed. The results of this study are expected to be of interest to quantum Hall effect theory.

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Magnetic and electrical properties of Fe90Ta10 thin films

Cited by 10 publications

References 33 publications

Morphological data on soft ferromagnetic Fe90Ta10 thin films

Morphological data on soft ferromagnetic Fe90Ta10 thin films

High-Performance Titanium Oxynitride Thin Films for Electrocatalytic Water Oxidation

A Charged Particle with Anisotropic Mass in a Perpendicular Magnetic Field–Landau Gauge

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