Article
Materials Science, Ceramics
Jie Li, Haifeng Liu, Hongwei Wu, Jiacheng Yang, Ting Deng, Sili Liu, Ruishi Xie, Baogang Guo, Xingquan Zhang, Kui Zheng, Jichuan Huo
Summary: In this work, LaNiO3 epitaxial thin films were deposited on (001) single-crystal LaAlO3 and SrTiO3 substrates using polymer assisted deposition method. Additionally, LaNiO3 polycrystalline film was coated on ceramic substrate using LaNiO3 powder obtained from precursor solution in polymer assisted deposition. The lattice mismatch between LaNiO3 and single-crystal substrates results in the distortion of NiO6 octahedrons, which increases with the intensity of strain and enhances the visible-light photoconductivity.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Fan Zhang, Yang Lv, Yan Shao, Yu Bai, Yi Zhuo Li, Chao Wang, Zhan Jie Wang
Summary: The PZT/LNO/PZT composite films were prepared with different thicknesses of LNO layer, and it was found that the electrical properties were significantly enhanced due to the in-plane compressive strain effect and accumulated space charges at the PZT/LNO interface. The composite film with a 140-nm-thick LNO layer showed the best electrical properties in terms of remnant polarization and dielectric constant.
Article
Materials Science, Multidisciplinary
Yao Dan, Wang Weiwei, Yu Jiangying, You Yuwei
Summary: The epitaxial structure and properties of sol-gel derived LaNiO3 thin films modified with polyethyleneimine were investigated. The lattice parameters and resistivity of the epitaxial films were found to vary under different strain conditions.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2022)
Article
Chemistry, Physical
Beya Ouertani, Habib Boughzala, Bertrand Theys, Hatem Ezzaouia
Summary: The incorporation of ruthenium into FeSe2 thin films has shown significant improvement in optical and electrical properties, making them promising for photovoltaic applications. The alloyed films exhibited N-type conductivity with high absorption coefficients and desired band gap values. The use of ruthenium as an alloying agent in FeSe2 thin films shows potential for various applications, especially in the field of photovoltaics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Crystallography
Piotr Winiarz, Monica Susana Campos Covarrubias, Mantas Sriubas, Kristina Bockute, Tadeusz Miruszewski, Wojciech Skubida, Daniel Jaworski, Giedrius Laukaitis, Maria Gazda
Summary: This work reviews experimental results on the electrical properties of barium cerate-zirconate thin films and discusses the strong influence of film microstructure on these properties. Additionally, the effects of interface layers, space-charge layers, and strain-modified layers on total conductivity are also essential considerations.
Article
Chemistry, Physical
Hao Liu, Yamei Wang, Huan Zheng, Shuhao Wang, Run Zhao, Lei Zhang, Langsheng Ling, Haiyan Wang, Hao Yang, Jiyu Fan
Summary: In this study, the influence of thickness-dependent strain effect on the ferromagnetic insulating properties of LCO was investigated. It was found that the film strain decreased and the ferromagnetic property weakened with increasing film thickness, and the spin moment of Co3+ ions also reduced with increasing thickness. Increasing film thickness was unfavorable for the presence of eg electrons and for the intermediate-spin and high-spin states.
APPLIED SURFACE SCIENCE
(2024)
Article
Physics, Applied
K. Yamagami, K. Ikeda, A. Hariki, Y. Zhang, A. Yasui, Y. Takagi, Y. Hotta, T. Katase, T. Kamiya, H. Wadati
Summary: The study investigated the strain dependence of valence states in LaNiO3 films on different substrates using hard x-ray photoemission spectroscopy. Results showed that the point-charge description is valid for La ions but breaks down for Ni and O ions due to strong covalent bonds between them. Density functional theory analysis revealed a clear x-ray photon-energy dependence of valence spectra with the presence of La 5p state near the Fermi level.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Ceramics
Yan Liu, Zhibiao Ma, Yangyang Wang, Bingdong Yao, Jingxian He, Jing Li, Fengqing Zhang
Summary: In this study, a BTBF composite film was prepared using the sol-gel method on a FTO/glass substrate, and its structure, oxygen vacancy concentration, electrical properties, and aging were tested and analyzed at different annealing temperatures. The results showed that the sample annealed at 615°C exhibited the best crystallinity, ferroelectricity, and leakage current characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Jinyu Ruan, Chao Yin, Tiandong Zhang, Hao Pan
Summary: The study designed and fabricated ferroelectric multilayer thin films using the magnetron sputtering method and introduced a seed layer. Results showed that films with the seed layer exhibited improved surface quality and electrical properties.
FRONTIERS IN MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Rashmi Ranjan Kumar, Raghvendra, Ranjit Laha, Saurabh Kumar Pandey
Summary: Gold nanoparticles (AuNPs) were incorporated beneath the ZnO thin films and were found to affect the electrical and optical properties of the films. The presence of AuNPs increased the carrier concentration and the films exhibited different emission and Raman spectra. This study provides a simple method to control the properties of ZnO thin films by incorporating AuNPs.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Sourav Singh Tomar, Ekta Yadav, Kavita Soni, K. R. Mavani
Summary: In this study, a series of LaNi1-xTixO3 thin films were deposited on LaAlO3 (001) single-crystal substrates using pulsed laser deposition method, and the effect of Ti doping on structural and electronic properties was investigated. Ti doping resulted in changes in the metallic properties of the films, as well as distortions in the Ni-O-Ni bond angle and NiO6 octahedra. The systematic variations in resistivity and Raman modes observed were both attributed to Ti doping in the system.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xiao-Ying Zhang, Jing Han, Duan-Chen Peng, Yu-Jiao Ruan, Wan-Yu Wu, Dong-Sing Wuu, Chien-Jung Huang, Shui-Yang Lien, Wen-Zhang Zhu
Summary: In this study, HfO2 thin films were prepared on silicon using plasma enhanced atomic layer deposition (PEALD) and the effects of substrate temperature on their structure, morphology, and electrical properties were investigated.
Article
Physics, Applied
Vadim S. Nozdrin, Gennadiy A. Komandin, Igor E. Spektor, Nikita V. Chernomyrdin, Dmitry S. Seregin, Alexey S. Vishnevskiy, Konstantin A. Vorotilov
Summary: Transparent semiconducting oxides are commonly used as conductive electrodes in optoelectronic devices, but their applications in the THz frequency range are limited. This study investigates lanthanum nickelate films using contactless and nondestructive methods to explore their optical and electrodynamic properties. The results show the potential of using lanthanum nickelate films with decreased conductivity as electrode layers in optoelectronic converters in the THz frequency range.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Khaoula Derrar, Mourad Zaabat, Nouhad Rouabah, Roshan Nazir, Faouzi Hanini, Abdelkader Hafdallah, Sher Afghan Khan, Norah Salem Alsaiari, Khadijah Mohammedsaleh Katubi, Khamael M. Abualnaja
Summary: The present study investigates the influence of pure and antimony-doped tin oxide thin films on their structural, optical, and electrical properties. It is found that the size and surface morphology of the doped films are affected by the dopant concentration, while the electrical properties depend on the dopant concentration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Haojie Qu, Yuxian Guo, Donghui Zhang, Bai Sun, Linli Yan
Summary: In this study, vanadium dioxide thin films were fabricated on Al2O3 substrates by sol-gel method and subsequent annealing process. The effects of annealing temperature on the structure, chemical state, surface morphology and electrical properties of the films were studied. The results showed that the films exhibited good phase transition property as the annealing temperature increased.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Applied
M. Filianina, Z. Wang, L. Baldrati, K. Lee, M. Vafaee, G. Jakob, M. Klaeui
Summary: This work discusses the unusual behavior of field-like spin-orbit torques in a multilayer system with reduced magnetic anisotropy and demonstrates an energy-efficient method to manipulate the magnitude of SOT effective fields. The results show the possibility of engineering the anisotropy of field-like SOTs by piezoelectric strain, which could be attractive for applications in spintronics.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Oliver Gueckstock, Lukas Nadvornik, Martin Gradhand, Tom Sebastian Seifert, Genaro Bierhance, Reza Rouzegar, Martin Wolf, Mehran Vafaee, Joel Cramer, Maria Andromachi Syskaki, Georg Woltersdorf, Ingrid Mertig, Gerhard Jakob, Mathias Klaeui, Tobias Kampfrath
Summary: This study investigated ultrafast spin-to-charge-current conversion in F|N bilayers using terahertz emission spectroscopy. It found that varying the structure of the F/N interface can significantly impact the amplitude and polarity of the charge current, with a dominant interface contribution observed in materials with small spin Hall angle. The results suggest the potential of skew scattering for enhancing interfacial spin-to-charge conversion.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jasnamol Pezhumkattil Palakkal, Lukas Zeinar, Marton Major, Philipp Komissinskiy, Thorsten Schneider, Lambert Alff
Summary: The strained oxygen-deficient perovskite SrFeO3-delta (SFO) films grown by PLD on STO substrates exhibit increased lattice parameter, decreased mass density and the presence of Fe3+ cations compared to stoichiometric SrFeO3 perovskite. The monoclinically distorted SFO structure with increasing film thickness results in reduced total magnetic moment. Additionally, a wasp-waisted hysteresis loop and negative exchange bias are observed for a 69 nm thick film due to possible magnetic sublayers.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Nanoscience & Nanotechnology
Shalini Sharma, Alexander Zintler, Damian Guenzing, Johanna Lill, Debora Motta Meira, Robert Eilhardt, Harish Kumar Singh, Ruiwen Xie, Georgia Gkouzia, Marton Major, Iliya Radulov, Philipp Komissinskiy, Hongbin Zhang, Konstantin Skokov, Heiko Wende, Yukiko K. Takahashi, Katharina Ollefs, Leopoldo Molina-Luna, Lambert Alff
Summary: This study demonstrates the stabilization of a nanoscale thin-film magnet with controlled phase separation in a binary Sm-Co system, utilizing molecular beam epitaxy technique. The well-aligned growth of Sm2Co17 and SmCo5 phases with coherent interfaces leads to strong exchange interaction, enhancing magnetization and magnetic coupling. The unique microstructure design of this new generation magnet paves the way for beyond state-of-the-art permanent magnets.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Shuai Wang, Mahdad Mohammadi, Imants Dirba, Kathrin Hofmann, Barbara Albert, Lambert Alff, Philipp Komissinskiy, Leopoldo Molina-Luna
Summary: A molecular dynamics simulation approach was used to study the thermal expansion of lattice parameters and heat capacities of SrMoO3 and BaMoO3 perovskite-type molybdates at temperatures ranging from 300 to 1000 K. By fitting the lattice parameters to high-purity polycrystalline powders synthesized at high pressure, meaningful shapes of pairwise potential were obtained for SrMoO3 and BaMoO3. The simulated temperature dependence of heat capacity was validated against reported experimental data near and above the Debye temperature.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Acoustics
Dominik Walk, Prannoy Agrawal, Lukas Zeinar, Patrick Salg, Alexey Arzumanov, Philipp Komissinskiy, Lambert Alff, Rolf Jakoby, Stefan J. Rupitsch, Holger Maune
Summary: A highly accurate microwave impedance model for ferroelectric varactors is derived, covering a wide frequency and biasing range, suitable for all-oxide devices. The model's accuracy enables the determination of all relevant electric and mechanic properties based on microwave characterization.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Physics, Applied
G. A. Ovsyannikov, K. Y. Constantinian, K. L. Stankevich, T. A. Shaikhulov, A. A. Klimov
Summary: The study investigated the spectra of ferromagnetic resonance and spin current in the heterostructure consisting of an epitaxial film of yttrium iron garnet (YIG) and a platinum (Pt) film on top, showing deviations of spin current spectral lines from a Lorentz line form and the effect of temperature on spin current behavior. The results provide insights into the relationship between spin current spectra and magnetic properties under different conditions of frequency, power, and temperature.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Peter B. Mozhaev, Igor K. Bdikin, Valery A. Luzanov, Jorn Bindslev Hansen, Claus S. Jacobsen
Summary: The study investigated the mechanisms of tilt formation in metal oxide multilayer heterostructures with a 3D graphoepitaxial growth mode. It was found that each layer growing in the 3DGE mode demonstrates tilt, and the introduction of a non-graphoepitaxial interface into the multilayer results in a corresponding change of tilt of the top layer.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Alessandro Magni, Vittorio Basso, Alessandro Sola, Gabriel Soares, Nicola Meggiato, Michaela Kuepferling, Witold Skowronski, Stanislaw Lazarski, Krzysztof Grochot, Mehran Vafaee Khanjani, Juergen Langer, Berthold Ocker
Summary: The spin Hall magnetoresistance (SMR) in Pt/FeCoB bilayers with in-plane magnetocrystalline anisotropy was analyzed, which allows the determination of magnetic remanence and spin-orbit-torque efficiency.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Materials Science, Multidisciplinary
Supratik Dasgupta, Philipp Komissinskiy, Pavan Nukala, Iliya Radulov, Andrei Rogalev, Fabrice Wilhelm, Marton Major, Jasnamol P. Palakkal, Aldin Radetinac, Lambert Alff
Summary: A three-dimensional disordered spin system composed of 3d transition metal ion Mn4+ and heavy 5d transition metal ion Ir4+ in the form of a perovskite thin film has been studied. The ground state of the material is ferromagnetic with both Mn and Ir spins aligned in parallel, driven by charge-transfer magnetic exchange involving Mn e(g)-state and Ir t(2)g-state. Spin-glass features are observed at low temperatures due to competing magnetic interactions and randomness in the system.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Physics, Applied
G. A. Ovsyannikov, K. Y. Constantinian, E. A. Kalachev, A. A. Klimov
Summary: The ferromagnetic resonance in epitaxial iridate/manganite heterostructures was studied, and it was found that the imaginary component of the spin mixing conductance is anomalously large.
TECHNICAL PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Raphael Gruber, Jakub Zazvorka, Maarten A. Brems, Davi R. Rodrigues, Takaaki Dohi, Nico Kerber, Boris Seng, Mehran Vafaee, Karin Everschor-Sitte, Peter Virnau, Mathias Klaeui
Summary: The study shows that skyrmions are pinned at their boundaries rather than at their cores. The pinning effects are strongly influenced by a complex pinning energy landscape, which goes beyond the conventional effective rigid quasi-particle description. This results in complex skyrmion shape distortions and allows for dynamic switching of pinning sites and flexible tuning of the pinning.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
Thorsten Schneider, Juliette Cardoletti, Hui Ding, Mao-Hua Zhang, Tianshu Jiang, Marton Major, Philipp Komissinskiy, Leopoldo Molina-Luna, Lambert Alff
Summary: An antipolar phase and thickness-dependent properties were confirmed for NaNbO3 thin films grown on SrTiO3 (100) substrates by pulsed laser deposition. Characteristic 1/4 superlattice reflections revealed the antipolar displacement of Na and Nb ions. X-ray diffraction showed two different orientations of the same phase for films beyond a critical thickness, with an explanation based on extraordinary strain compensation mechanism. The polarization vs electric field behavior exhibited a thickness dependence, with a stabilized antiferroelectric phase for very thin films and field induced ferroelectric hysteresis for thicker films.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Mahdad Mohammadi, Ruiwen Xie, Niloofar Hadaeghi, Aldin Radetinac, Alexey Arzumanov, Philipp Komissinskiy, Hongbin Zhang, Lambert Alff
Summary: This study demonstrates that the absorption and reflection edges of SrV1-xMoxO3 solid solution can be shifted to the edges of the visible light spectrum, making it a potential alternative to indium tin oxide (ITO) with extremely low sheet resistance. The optimum composition with x = 0.5 shows a resistivity of 32 mu omega cm and transmittance above 84% across the visible spectrum. The shift of the plasma frequency is governed by the interplay of d-band filling and electronic correlations. This research contributes to the understanding of highly conducting perovskites for sustainable transparent conductors and emergent plasmonics.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
N. Schaefer, D. Guenzing, T. Jiang, N. Karabas, A. Arzumanov, D. Motta-Meira, K. Ollefs, P. Komissinskiy, M. Major, M. Arnold, N. Pietralla, H. Wende, L. Molina-Luna, D. Luetzenkirchen-Hecht, L. Alff
Summary: This work investigates the influence of the kinetic energy of the deposited particles on the defect structure in Nb3Sn thin films synthesized at low temperatures. The results show that higher kinetic energies of the elemental species during deposition lead to improved local order and elemental homogeneity of the Nb3Sn films, as well as suppressed local inhomogeneities at grain boundaries. The suggested materials' synthesis eliminates the magnetic field-induced reduction of critical currents across weak-links formed at grain boundaries.
JOURNAL OF APPLIED PHYSICS
(2023)
