Article
Nanoscience & Nanotechnology
Sichen Xu, Qishan Zhu, Guoqing Liang, Jianmin Zhang, Han Wang, Haiyan Wang, Run Zhao, Lu You, Xiaodong Su, Rujun Tang
Summary: Significant modulation of saturation magnetization, magnetic anisotropy field, and multiferroic ordering temperature can be achieved in BaFe10.2Sc1.8O19 (BFSO) epitaxial thin film by introducing different densities of lattice defects. The defects-related magnetic field decreases with increasing annealing temperature, in accordance with the reduced density of lattice defects. The findings provide important insights into regulating the physical properties of multiferroic hexaferrite devices through lattice defects.
SCRIPTA MATERIALIA
(2022)
Review
Nanoscience & Nanotechnology
Hui-Chuan Liu, Si-Ming Zeng, Rui Li, Yan-Ping Jiang, Qiu-Xiang Liu, Xin-Gui Tang
Summary: The study demonstrated bipolar resistive switching and ferroelectricities of Ni0.5Zn0.5Fe2O4 (NZFO) thin films using Au/NZFO/LNO/Si structure. It was found that annealing atmosphere influences the structure and properties of NZFO, with oxygen vacancy and strain stress playing a significant role. The saturation magnetization and remnant polarization values of the samples were affected by the annealing atmosphere, with improved resistive switching property observed in NZFO annealed in nitrogen atmosphere.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Feng An, Mengfei Zi, Qianxin Chen, Cong Liu, Ke Qu, Tingting Jia, Mingqiang Huang, Gaokuo Zhong
Summary: In this study, high-quality BTFM-CTO thin films were prepared on mica substrates using the sol-gel method. The films exhibited controllable ferroelectric and magnetic effects at room temperature. The in-plane ferroelectric domains of the films could be switched by applying bending strain or an external magnetic field, demonstrating the multifield control ferroelectric polarization properties of the flexible thin films.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Ceramics
Yun Mei, Zongfan Duan, Zhangyuan Li, Yuanxin Zhao, Jingyi Ni, Yulong Li, Jingyu Zhang, Yingrong Chen, Xianhui Wang, Gaoyang Zhao
Summary: The study explores the influence of Co2+ doping on the properties of Bi4Ti3O12/La0.67Sr0.33MnO3 composite thin films, showing that the BITC0.05/LSMO composite thin film exhibits excellent multiferroic properties with optimal magnetoelectric performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Xujiao Lv, Jinjun Liu, Jinghao Zhao, Mingkun Wang, Zhongbin Pan
Summary: In this study, BaTiO3-PVDF/CoFe2O4-PVDF/BaTiO3-PVDF composite materials were designed and fabricated. The microstructure, dielectric, ferroelectric, magnetic, and magnetodielectric properties were systematically investigated. Enhanced ferroelectricity, high energy density, significant magnetic properties, and magnetodielectric response were observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Kalani Moore, Eoghan N. O'Connell, Sinead M. Griffin, Clive Downing, Louise Colfer, Michael Schmidt, Valeria Nicolosi, Ursel Bangert, Lynette Keeney, Michele Conroy
Summary: This study shows that the thin-film Aurivillius phase Bi6TixFeyMnzO18 is an ideal material platform for domain wall and vortex topology-based nanoelectronic devices. The presence and structure of charged domain walls are revealed using atomic-resolution electron microscopy. Moreover, it is found that polar vortex-type topologies also form at out-of-phase boundaries of stacking faults. The study suggests the potential for strain engineering to control the formation of polar vortex topology in other multiferroic thin films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
T. K. Lin, H. W. Chang, W. C. Chou, B. A. Chen, C. R. Wang, D. H. Wei, C. S. Tu, P. Y. Chen
Summary: In this study, the crystalline structure, ferroelectricity, leakage current density, magnetic, and nanomechanical properties of BiFeO3 (BFO) films with Ce substitution were investigated. The results showed that Ce substitution improved the ferroelectric and magnetic properties of BCFO films, with an increase in remanent polarization and enhanced saturation magnetization. The BCFO films also exhibited strong anti-fatigue properties and enhanced nanomechanical characteristics influenced by grain size and phase composition.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Engineering, Electrical & Electronic
Fang Hu, Wenjie Ming, Liu Yang, Can Huang, Hongyang Zhao, Shuhong Xie, Zhenxiang Cheng, Tingting Jia
Summary: This article investigates the resistive switching mechanism in solid solution oxides, successfully fabricating binary and ternary solid solution films with switchable polarization, weak magnetism, and reversible resistive switching effects. Multi-stage resistive switching behavior was observed, with the binary film demonstrating four resistive switching states. The dominant role of oxide vacancy/valance exchange-induced defects in the resistive switching effect of complex oxide thin films is discussed.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Coatings & Films
T. K. Lin, H. W. Chang, C. R. Wang, D. H. Wei, C. S. Tu, P. Y. Chen
Summary: This study investigated the phase constitutions, ferroelectric, magnetic, and nanomechanical characteristics of BiFeO3 films with Dy substitution. The results showed that the BDFO films exhibited desired ferroelectric and ferromagnetic properties, and the hardness of the films was controlled mainly by the impeded propagation of dislocation by grain boundary. The findings suggest that the radius and magnetic moment of the Dy3+ ions play a critical role in the structural evolution and enhanced properties of the BDFO films.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Mengjun Wu, Fei Sun, Xintong Wang, Xiaoyue Zhang, Weijin Chen, Yue Zheng
Summary: This work reports a facile control of ferroelastic domain patterns in BiFeO3 thin films by exploiting the tip bias as the control parameter. By controlling the scanning tip bias, mesoscopic topological defects can be readily written into the films without the necessity to change the tip motion. The correlation between conductance of the scanned region and the switching pathway is further investigated.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Wanyun Zhang, Kexin Li, Kaixin Guo, Ruirui Cui, Xiaosi Qi, Chaoyong Deng
Summary: In this study, BTFO and BTFNO films were grown on Pt/TiO2/SiO2/Si substrates by pulsed laser deposition, and their microstructure, morphology, ferroelectricity, and ferromagnetism were investigated. The results showed that BTFNO films exhibited better ferroelectricity and ferromagnetism, indicating potential applications in information storage.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Physics, Applied
Tsubasa Migita, Masafumi Kobune, Kengo Matsumoto, Yuuri Takeuchi, Hironori Fujisawa, Kensuke Kanda, Kazusuke Maenaka
Summary: Microplate (MP) and microrod (MR)-type CoFe2O4/(Bi3.25Nd0.65Eu0.10)Ti3O12 composite thin films were fabricated using a combination of reactive ion etching and metalorganic chemical vapor deposition. The optimal post-annealing temperature of 700 degrees C was found to improve the magnetoelectric (ME) properties, with MR shape showing a greater ME effect compared to MP shape. The electrical insulation properties of the films improved with increasing post-annealing temperature, while high-temperature caused degradation in magnetic and ferroelectric properties.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Binbin Xin, Arnaud Le Febvrier, Lei Wang, Niclas Solin, Biplab Paul, Per Eklund
Summary: Highly pure CaxCoO2 thin films were successfully obtained through annealing multilayers, with excellent optical properties and the possibility to increase electrical conductivity by introducing a secondary phase. This study provides a new method for the preparation of solid-state oxide thin films.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Ceramics
Wenyue Zhao, Zhao Wang, Ze Li, Yazhou Peng, Lei Shi, Wenjing Hua, Lidong Wang, Wei-Dong Fei, Yu Zhao
Summary: In this paper, the effect of defect dipoles on the ferromagnetic and ferroelectric properties of Ca3Mn2O7 improper ferroelectric thin films is reported. Both Mn3+-V···O and Li+-Al3+ defect dipoles can introduce ferromagnetism in the films, and Li+-Al3+ defect dipole can also improve ferroelectricity. The local lattice distortion plays a crucial role in the multiferroic properties of the film.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Aleksander Matavz, Primoz Kozelj, Maximilian Winkler, Korbinian Geirhos, Peter Lunkenheimer, Vid Bobnar
Summary: The Pb(Zr,Ti)O3-NiFe2O4 thin-film composites were fabricated by spin coating a nickel ferrite precursor solution onto self-assembled porous lead zirconate titanate thin films, revealing a very extensive interface area between both constituents. X-ray diffraction indicated that NiFe2O4 coatings induced large compressive in-plane stresses in Pb(Zr,Ti)O3, generating a two phase pure system. The multiferroicity of the composites was evidenced by both ferroelectric and ferromagnetic hysteresis loops.
Article
Chemistry, Applied
Manal Benyoussef, Halima Zaari, Jamal Belhadi, Youssef El Amraoui, Hamid Ez-Zahraouy, Abdelilah Lahmar, Mimoun El Marssi
Summary: The properties of Na-0.5(Bi3/4RE1/4)(0.5)TiO3 compounds were investigated using first-principles calculations and experimental measurements. It was found that compositions with high polarization values exhibit a higher TiO6 distortion, and the effect of rare-earth elements on polarization was confirmed experimentally. The investigation of electronic properties revealed the emergence of magnetization due to the 4f orbital effect of rare-earth elements. Additionally, the study of chemical ordering showed increased relaxor properties in rare-earth doped compositions.
JOURNAL OF RARE EARTHS
(2022)
Article
Materials Science, Ceramics
Mohamed Aissa, Moneim Zannen, Manal Benyoussef, Jamal Belhadi, Matjaz Spreitzer, Zdravko Kutnjak, Mimoun El Marssi, Abdelilah Lahmar
Summary: Undoped and Dy3+ doped KNNBT ceramics were synthesized using solid-state synthesis method, with pure perovskite structure confirmed by X-ray diffraction analysis. The ceramics showed good dielectric performance, with lower dielectric losses in the dysprosium doped samples, and exhibited electrocaloric effects.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Condensed Matter
S. Smail, M. Benyoussef, K. Taibi, B. Manoun, N. Bensemma, A. Souici, M. El Marssi, A. Lahmar
Summary: The study synthesized lead-free compounds and investigated their structural, dielectric, and photoluminescent properties. BLnZ5TS exhibited normal ferroelectric behavior, while BLnZ20TS displayed relaxor ferroelectric properties.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Condensed Matter
M. Belarbi, Y. Tamraoui, B. Manoun, A. Cantaluppi, Y. Gagou, K. Taibi, M. El Marssi, A. Lahmar
Summary: The present study investigates the effect of Nd3+ substitution on the structural, dielectric, and energy storage properties of Ba2NaNb5O15 ceramics. It was found that increasing the amount of Nd in the ceramics led to an increase in the dielectric constant. The optimal discharge density was observed for the composition x = 0.7.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
M. Benyoussef, T. Mura, S. Saitzek, F. Azrour, J-F Blach, A. Lahmar, Y. Gagou, M. El Marssi, A. Sayede, M. Jouiad
Summary: Nanostructured BaTi1-xSnxO3 materials were successfully synthesized and characterized. The addition of Sn was found to alter the symmetry and Curie temperature of the material. Indirect electrocaloric properties and energy storage performances were determined through ferroelectric hysteresis loops. Sn doping in BT was found to improve the energy efficiency of the material.
CURRENT APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Mahmoud Nasr, Lamyae Benhamou, Ahmed Kotbi, Nitul S. Rajput, Andrea Campos, Abdel-Ilah Lahmar, Khalid Hoummada, Khaled Kaja, Mimoun El Marssi, Mustapha Jouiad
Summary: In this study, tungsten disulfide (WS2) nanosheets were synthesized via one-step chemical vapor deposition and further reduced in size through high-energy ball milling with the addition of graphene. The resulting graphene@WS2 samples exhibited high optical absorption and a lower band gap compared to other samples, demonstrating good band-edge alignment with the water-splitting reaction. Additional characterization using high-resolution electron microscopy confirmed the morphology and crystal structure of the samples. Photoelectrochemical measurements revealed that the graphene@WS2 (1 wt%) sample exhibited excellent photocurrent density and higher charge transfer ability compared to pristine WS2, indicating its potential as an efficient photoanode for the hydrogen evolution reaction.
Article
Chemistry, Physical
Bouchra Asbani, Yaovi Gagou, Said Ben Moumen, Jean-Luc Dellis, Abdelilah Lahmar, M'Barek Amjoud, Daoud Mezzane, Mimoun El Marssi, Brigita Rozic, Zdravko Kutnjak
Summary: The ferroelectric property and electrocaloric effect of Ba(GexTi1-x)O-3 ceramics were investigated, showing promising results for cooling devices and energy storage applications.
Article
Chemistry, Inorganic & Nuclear
Fouad Alloun, Mohammed Hadouchi, Abderrazzak Assani, Mohamed Saadi, Abdelilah Lahmar, Mimoun El Marssi, Daoud Mezzane, Lahcen El Ammari
Summary: A new silver-cobalt-iron orthophosphate was synthesized and studied in single crystal and powder forms. The crystal structure was determined as monoclinic with C2/c space group. The phosphate consists of FeO6 and CoO6 octahedra, and PO4 tetrahedra forming infinite layers. Ag+ cations occupy the interlayer space and crystal framework cavities. The synthesized powder's purity was confirmed using X-ray diffraction analysis. The infrared and Raman spectra indicated the vibration modes of the PO4 tetrahedra. Impedance spectroscopy showed an ionic conductivity of 2.6 x 10(-3) S cm(-1) at 773 K, with Ag+ mobility in the layered structure. Magnetic investigation revealed antiferromagnetic order below T-N of 10 K and a Curie-Weiss constant of theta = -119.39 K.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Ilham Hamdi Alaoui, Mebarki Moussa, Nathalie Lemee, Francoise Le Marrec, Anna Cantaluppi, Delphine Favry, Abdelilah Lahmar
Summary: Rare earth element-doped Bi0.5Na0.5TiO3-BaTiO3 (BNT-BT-RE) polycrystalline thin films were prepared by chemical solution deposition on a platinized substrate. The microstructure, dielectric, and ferroelectric properties of the films were investigated, revealing an increase in dielectric constant, breakdown strength, and energy storage density for films doped with Nd and Dy. The optical properties of the films containing lanthanide element showed potential for luminescence applications. The simultaneous presence of ferroelectric and optical properties in the system holds promise for advanced optoelectronic devices.
Article
Biochemistry & Molecular Biology
Zakaria Chchiyai, Oumayema El Ghali, Abdelilah Lahmar, Jones Alami, Bouchaib Manoun
Summary: In this study, a novel porous Zn0.5Mg0.5FeMnO4 spinel oxide was successfully synthesized and demonstrated good cycling stability and specific capacity as an anode material for Li-ion batteries (LIBs).
Article
Chemistry, Analytical
Jacem Zidani, Khaoula Hassine, Moneim Zannen, Andreas Zeinert, Antonio Da Costa, Anthony Ferri, Jamal Belhadi, Mustapha Majdoub, Mimoun El Marssi, Abdelilah Lahmar
Summary: The purpose of this research was to synthesize bioderived nanocomposite films by incorporating NBTO nanoparticles into a chitosan matrix. The study found that the NBTO nanoparticles were uniformly dispersed and interlocked with other particles, forming interconnected grains with significant interspaces within the chitosan matrix. The optical properties were mainly influenced by light scattering from the NBTO particles and the distinctive bandgap exhibited by the NBTO phase. The composite films showed higher dielectric values compared to pure chitosan films, and the dielectric values increased with higher NBTO content. Piezoelectric measurements confirmed the expected piezoelectric and ferroelectric behavior of NBTO particles within the chitosan matrix, demonstrating the versatility of these materials.
Article
Chemistry, Inorganic & Nuclear
Sirine El Arni, Mohammed Hadouchi, Abderrazzak Assani, Mohamed Saadi, Mimoun El Marssi, Abdelilah Lahmar, Lahcen El Ammari
Summary: A novel pyrophosphate Na7Ni3Fe(P2O7)(4) was synthesized in two forms, single-crystal and powder. The crystal structure, purity, and morphology were determined using various techniques. It was found that the compound has a three-dimensional structure with tunnels housing Na+ cations, and exhibits antiferromagnetic behavior with two magnetic transitions.
Article
Instruments & Instrumentation
Ilham Hamdi Alaoui, Nathalie Lemee, Francoise Le Marrec, Moussa Mebarki, Anna Cantaluppi, Delphine Favry, Abdelilah Lahmar
Summary: In this study, Bismuth sodium titanate (BNT) thin films were successfully deposited using the Sol-Gel spin coating technique. The microstructural, structural, and electrical properties of the obtained film were investigated. The results showed good frequency stability of the dielectric constant and attractive electrostatic energy storage properties.
QUANTUM BEAM SCIENCE
(2023)
Article
Chemistry, Physical
Abdelilah Lahmar, Jacem Zidani, Jamal Belhadi, Ilham Hamdi Alaoui, Hussam Musleh, Jehad Asad, Naji Al Dahoudi, Mimoun El Marssi
Summary: The effect of ferromagnetic CaMnO3 (CMO) addition on the structural, magnetic, dielectric, and ferroelectric properties of BiFeO3 is investigated. The results show that CMO doping can modify the magnetic and ferroelectric properties of BiFeO3, which is of great significance for its applications.
Proceedings Paper
Materials Science, Multidisciplinary
A. Ihyadn, D. Mezzane, M. Amjoud, A. Lahmar, L. Bih, A. Alimoussa, I. A. Luk'yanchuk, M. El Marssi
Summary: Barium sodium niobate (BNN) ceramics with different amounts of BaO-Na2O-Nb2O5-P2O5 (BNNP) glass were prepared and the effect of glass content on the structural, microstructural, and dielectric properties of the ceramics was investigated. The results showed that adding BNNP glass improved the microstructure and significantly increased the dielectric constant of the ceramics.
MATERIALS TODAY-PROCEEDINGS
(2022)