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Cubic perovskite-structure ABO$_3$ and A$_{1-x}$A$^{\prime}$$_x$BO$_3$-type oxides have been investigated extensively while their hexagonal-structure versions have received minimal attention, even though they are multiferroic and can form…

Materials Science · Physics 2024-01-29 M. J. Swamynadhan , Andrew O'Hara , Saurabh Ghosh , Sokrates T. Pantelides

The current progress in describing rare-earth-based magnets' electronic structure and magnetic properties is discussed. We use several currently popular electronic structure methods to show the typical values of critical parameters that…

Materials Science · Physics 2025-02-06 Zhen Zhang , Andrey Kutepov , Leonid Pourovskii , Vladimir Antropov

Piezoelectrics play a critical role in various applications. The permanent dipole associated with the molecular cations in organometal-halide perovskites (OMHPs) may lead to spontaneous polarization and thus piezoelectricity. Here, we…

Materials Science · Physics 2015-12-17 Shi Liu , Fan Zheng , Ilya Grinberg , Andrew M. Rappe

In this study, we determined the different physical characteristics of nanoscale layered mixed Fe-Co layers of orthoferrite SmFe0.5Co0.5O3 based on magnetic and dielectric measurements.Magnetization analyzes showed that the system was…

Materials Science · Physics 2018-12-27 Ashish Shukla , Akash Singh , Md. Motin Seikh , Asish K Kundu

Based on density functional theory calculations, we elucidated the origin of multifunctional properties for cubic antiperovskites with noncollinear magnetic ground states, which can be attributed to strong isotropic and anisotropic…

The structural, magnetic and resistive properties of (La1-yYy)FeAsO compounds (y = 0.10, 0.20, 0.30) have been investigated by means of X-ray and neutron powder diffraction as well as by resistivity measurements. The temperatures at which…

Materials Science · Physics 2015-05-14 A. Martinelli , A. Palenzona , M. Tropeano , C. Ferdeghini , M. R. Cimberle , C. Ritter

Organic-inorganic hybrid perovskites (OIHPs) have attracted extensive research interest as a promising candidate for efficient and inexpensive solar cells. Transmission electron microscopy characterizations that can benefit the fundamental…

ABO3 perovskite multiferroic La0.5Bi0.5Mn0.5Fe0.5O3.09 where the B-site cations is responsible for the magnetic properties and the A-site cation with lone pair electron is responsible for the ferroelectric properties was synthesized at…

Materials Science · Physics 2008-08-25 Asish K. Kundu , R. Ranjith , V. Pralong , N. Nguyen , B. Kundys , V. Caignaert , W. Prellier , B. Raveau

The link between the crystal distortions of the perovskite structure and the magnetic exchange interaction, the single-ion anisotropy (SIA) and the Dzyaloshinsky-Moriya (DM) interaction are investigated by means of density-functional…

Materials Science · Physics 2015-06-05 Carlo Weingart , Nicola Spaldin , Eric Bousquet

Electronic mechanism in the interplay between ferromagnetism and structure stability of $4f$-$3d$ intermetallics in the main phase of rare-earth permanent magnets is investigated from first principles. We present a case study with an…

Materials Science · Physics 2019-02-01 Munehisa Matsumoto

We perform a detailed study of the electronic structure of Fe$_{1-x}$O at moderate values of $x$. Our results evidence that the Fe vacancies introduce significant local modifications of the structural, electronic and magnetic features, that…

Strongly Correlated Electrons · Physics 2014-11-21 I. Bernal-Villamil , S. Gallego

Spinel ferrites in general show a rich interplay of structural, electronic, and magnetic properties. Here, we particularly focus on zinc ferrite (ZFO), which has been observed experimentally to crystallise in the cubic $normal$ spinel…

Materials Science · Physics 2018-10-26 Daniel Fritsch

Understanding the structural underpinnings of magnetism is of great fundamental and practical interest. Se_{1-x}Te_{x}CuO_{3} alloys are model systems for the study of this question, as composition-induced structural changes control their…

Materials Science · Physics 2009-12-17 Jorge Iniguez , Taner Yildirim

The distortion of corner-sharing octahedra in isovalent perovskite transition-metal oxide interfaces is proven to be an excellent way to tailor the electronic and magnetic properties of their heterostructures. Combining depth-dependent…

A phenomenological theory of magnetic states in noncentrosymmetric tetragonal antiferromagnets is developed, which has to include homogeneous and inhomogeneous terms (Lifshitz-invariants) derived from Dzyaloshinskii-Moriya couplings.…

Strongly Correlated Electrons · Physics 2009-11-07 A. N. Bogdanov , U. K. Roessler , M. Wolf , K. -H. Muller

Mixed-valence perovskite manganites (Re$_{1-x}$A$_{x}$MnO$_{3}$ where Re=rare earth, A=alkaline earth) provide a unique opportunity to study the relationships between the structure and the magnetotransport properties due to an interplay…

Materials Science · Physics 2009-11-07 W. Prellier , Ph. Lecoeur , B. Mercey

We report a combined experimental and theoretical study on intriguing magnetic properties of quasiferroelectric orthochromates. Large single crystals of the family of RECrO$_3$ (RE = Y, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) compounds were…

The book includes all main physical properties of d- and f-transition-metal systems and corresponding theoretical concepts. Especial attention is paid to the theory of magnetism and transport phenomena. Some examples of non-traditional…

Condensed Matter · Physics 2021-09-01 V. Yu. Irkhin , Yu. P. Irkhin

In this study, the crystal structure and magnetic properties of La$_{2-x} A'_{x}$Ni$_{7}$ compounds with magnetic rare earth elements ($A$' = Sm, Gd) have been investigated combining X-ray powder diffraction and magnetic measurements. These…

Recent data reported on the magneto-electric coupling,{\alpha}, of hexaferrite materials is very high, and they have the potential to impact future technologies in a major way. The fundamental question addressed in this paper is what does…

Materials Science · Physics 2014-04-23 Carmine Vittoriaa , Somu Sivasubramanianb , Allan Widomc