Article
Physics, Applied
Lu Liu, Xiao Li Zhu, Z. Gareeva, A. K. Zvezdin, Jose Antonio Eiras, Xiang Ming Chen
Summary: By substituting rare-earth ions, the ferroelectric polarization and weak ferromagnetism in BiFeO3 ceramics are enhanced, achieving electric field-controlled magnetism.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
T. Ichinose, H. Naganuma
Summary: The study revealed that the BiFeO3/Ru bilayer structure exhibits both piezoelectric response and ferro-like magnetism, making it a promising candidate for the basic structure of multiferroic tunnel junctions.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Iliana N. Apostolova, Angel T. Apostolov, Julia M. Wesselinowa
Summary: Using a microscopic model, the properties of pure and ion doped CoCr2O4 - bulk and NPs were studied. It was found that the magnetization and Curie temperature decrease with decreasing particle size, and different effects were observed with Fe and Mg doping due to the different strains caused by doping ions. The polarization increases with increasing Fe doping concentration, and anomalies in specific heat were observed at specific temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Angel Apostolov, Iliana Apostolova, Julia Wesselinowa
Summary: The study theoretically investigated the magnetic, electric, phonon, and optical properties of pure and ion-doped orthorhombic YFeO3 nanoparticles. It was found that the spontaneous magnetization in YFeO3 decreases with decreasing particle size, while shape and ion doping can affect the magnetization strength. The influence of different factors on the phonon energy and band gap energy was also discussed, suggesting potential applications of doping effects.
Article
Materials Science, Multidisciplinary
M. M. Rhaman, M. A. Matin, M. A. Hakim, M. F. Islam
Summary: The synthesis of high-purity multiferroic bismuth ferrite (BFO) nanoparticles remains a challenge for researchers. In this study, high-purity BFO nanoparticles were successfully synthesized using a modified sol-gel method, and characterized for their structural, morphological, optical, electrical, and multiferroic properties. Impurity effects were analyzed, and dielectric properties were measured and characterized in detail.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Ceramics
S. Divyalakshmi, I. B. Shameem Banu, R. Rajesh
Summary: The study investigates the influence of oxygen octahedra distortion on the magnetic and magnetoelectric properties of Bi1-xErxFe1-yZryO3 (x = 0, .05, .1, y = .02, .05) polycrystalline nanoparticles synthesized by sol-gel route. The doping of Er (via Bi site) and Zr (via Fe site) ions in BiFeO3 results in variations in the Fe-O-Fe bond angle, tilt angle of oxygen octahedra, and canting angle of spiral spin arrangement. This leads to changes in the magnetization, number of electrons per unit cell, coherently diffracting domains, and magnetoelectric coupling coefficient. Among the samples, Bi0.95Er0.05Fe0.98Zr0.02O3 exhibits enhanced magnetic and magnetoelectric behaviors.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Physics, Applied
Athinarayanan Sundaresan, N. V. Ter-Oganessian
Summary: Over the last two decades, significant progress has been made in combining ferroelectricity and magnetism in the same material, particularly through the discovery of spin-induced ferroelectricity with strong coupling between magnetism and electric polarization, which is determined by the symmetries of the crystal lattice and magnetic structure.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Manpreet Singh, Pooja Kumari, Kamal Kishore, K. C. Verma
Summary: The study on synthesized BiFe1-xMnxO3 (BFMO) samples reveals that Mn doping affects both the ferroelectric and magnetic properties of BiFeO3, enhancing its magnetoelectric coupling capabilities, making it a suitable candidate for magnetoelectric devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Dariusz Bochenek, Przemyslaw Niemiec, Artur Chrobak, Piotr Guzdek
Summary: This paper analyzes the influence of hard and soft admixture on the functional properties of multiferroic ceramic composites. Two composite materials were synthesized via solid-state reaction route, with PZT-type materials as the ferroelectric component and nickel-zinc ferrite as the magnetic component. It is found that the type of doping (soft vs hard admixture) has significant effects on the dielectric, ferroelectric, electromechanical, magnetic, and magnetoelectric properties of the composites. PZT with a soft admixture shows advantages in terms of effective polarization and high magnetoelectric effect, while PZT with a hard admixture demonstrates better stability of physical parameters.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
A. T. Apostolov, I. N. Apostolova, J. M. Wesselinowa
Summary: The size, external field, and doping dependence of hexagonal YMnO3 nanoparticles were investigated theoretically. The results showed that the spontaneous magnetization increases with increasing electric field and decreasing nanoparticle size, while the polarization decreases with increasing magnetic field. The band gap also increases with decreasing nanoparticle size, and a strong spin-phonon interaction was observed in the phonon mode. Doping with different ions at the Mn site can either increase or decrease the magnetization depending on the observed strains.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Preethy Augustine, Narayana Yerol, Nandakumar Kalarikkal, B. Raneesh, M. T. Rahul, Sobi K. Chacko
Summary: The study developed nanocomposites with engineered multiferroic properties by combining soft ferromagnetic MnFe2O4 and ferroelectric BiFeO3. Characterization techniques such as XRD, FESEM, and HRTEM were used to analyze the crystallographic phase, structure, and morphology of the composites. The results demonstrate the potential application of these nanocomposites in magnetoelectric coupling, electrical performance, and magnetic response.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
P. Hemme, J-c. Philippe, A. Medeiros, A. Alekhin, S. Houver, Y. Gallais, A. Sacuto, A. Forget, D. Colson, S. Mantri, B. Xu, L. Bellaiche, M. Cazayous
Summary: This study investigates the effect of strain on the ferroelectricity and dynamic magnetic response of BiFeO3. The results show that the ferroelectric soft mode is significantly enhanced under tensile strain, and low energy magnon modes are suppressed, indicating a transition from cycloidal to homogeneous magnetic state. Effective Hamiltonian calculations reveal the competition between the ferroelectric and antiferrodistortive modes in the tensile regime.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Eduardo A. Volnistem, Roger C. Oliveira, Gabriel H. Perin, Gustavo S. Dias, Mauricio A. C. de Melo, Luis F. Cotica, Ivair A. Santos, Stefan Sullow, Dirk Baabe, F. Jochen Litterst
Summary: This study reports on the application of cryomilling for the synthesis of oxide ceramics nanoparticles, which resulted in controlled crystallite size, micro-strain, and dislocation density. Cryomilling promoted nanostructuration of the samples and enhanced the magnetic properties.
APPLIED MATERIALS TODAY
(2022)
Article
Materials Science, Multidisciplinary
Dingshi Xu, Fan Zhang, Ben Niu, Jun Du, Di Wu, Qi Li, Mingxiang Xu, Qingyu Xu
Summary: Fluoride ferroelectrics containing 3d transition metal ions show potential as single-phase multiferroics. The study successfully prepared pure phase Pb5Fe3F19 powders with confirmed ferroelectricity and magnetoelectric coupling. Two antiferromagnetic transitions were observed at different temperatures, along with the existence of weak ferromagnetism.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Condensed Matter
Iliana Naumova Apostolova, Angel Todorov Apostolov, Steffen Trimper, Julia M. Wesselinowa
Summary: The size, doping, and magnetic field affect the magnetization and dielectric function of doped LaFe1-xMxO3 nanoparticles. Different ions doping leads to changes in exchange interaction and strain, affecting the magnetic behavior. The multiferroic behavior is observed in pure and doped LaFeO3 nanoparticles with increasing magnetic field and doping concentration.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
