Results 21 to 30 of about 6,161 (262)

Magnetic susceptibility, EPR, NEXAFS and XPS spectra of Fe-doped CaBi2Nb2O9

Journal of Materials Research and Technology, 2020
In order to study the electronic state of Fe atoms and interatomic exchange interactions in solid solutions of Bi2CaNb2−2xFe2xO9−δ with perovskite structure, methods of magnetic dilution, NEXAFS, XPS and EPR spectroscopy were used.
N.A. Zhuk, V.P. Lutoev, B.A. Makeev, S.V. Nekipelov, A.V. Koroleva, A.V. Fedorova, M.V. Yermolina, D.S. Beznosikov, L.O. Karlova   +8 more
doaj   +1 more source

Effect of scandium atoms substitution on the two-slab structure of scandate BaGd2Sc2O7

Фізика і хімія твердого тіла, 2023
Tetragonal crystal structure (space group P42/mnm (No 136)) of the isovalently substituted BaGd2Sc2-xInxO7 phase with x = 0.5 was determined by X-ray powder diffraction methods.
Y.A. Titov, N.M. Belyavina, M.S. Slobodyanik, O.I. Nakonechna, N.Yu. Strutynska, V.V. Chumak   +5 more
doaj   +1 more source

From Heterostructures to Solid‐Solutions: Structural Tunability in Mixed Halide Perovskites

Advanced Materials, 2023
AbstractThe stability, reliability, and performance of halide‐perovskite‐based devices depend upon the structure, composition, and particle size of the device‐enabling materials. Indeed, the degree of ion mixing in multicomponent perovskite crystals, although challenging to control, is a key factor in determining properties.
Donghoon Shin, Minliang Lai, Yongjin Shin, Jingshan S. Du, Liban Jibril, James M. Rondinelli, Chad A. Mirkin   +6 more
openaire   +2 more sources

Controlling the Electronic Structures of Perovskite Oxynitrides and their Solid Solutions for Photocatalysis

ChemSusChem, 2016
AbstractBand‐gap engineering of oxide materials is of great interest for optoelectronics, photovoltaics, and photocatalysis applications. In this study, electronic structures of perovskite oxynitrides, LaTiO2N and SrNbO2N, and solid solutions, (SrTiO3)1−x(LaTiO2N)x and (SrTiO3)1−x(SrNbO2N)x, are investigated using hybrid density functional calculations.
Naoto, Umezawa, Anderson, Janotti
openaire   +3 more sources

Preparation, Structural and Electrophysical Studies of Ferroelectric Ceramic Samples of the System (1-2x)BiScO3-xPbTiO3-xPbMg1/3Nb2/3O3, 0 ≤ x ≤ 0.50

Тонкие химические технологии, 2019
Ceramic samples of the (1-2x)BiScO3-xPbTiO3-xPbMg1/3Nb2/3O3 system in the whole compositions region x = 0-0.50 were synthesized. According to the X-ray diffraction studies (XRD), the region of solid solutions with perovskite structure formation in the ...
A. I. Spitsin, A. A. Bush, K. E. Kamentsev, V. P. Sirotinkin, M. V. Talanov   +4 more
doaj   +1 more source

The Advent of Molecular Photovoltaics and Hybrid Perovskite Solar Cells

Substantia, 2019
Over the past decade, we witnessed a remarkable development of a new generation of photovoltaic technologies, in particular dyesensitized and perovskite solar cells.
Michael Grätzel, Jovana Milić
doaj   +1 more source

Chemical ordering and magnetic phase transitions in multiferroic –AFeSbO(A-Pb, Sr) solid solutions fabricated by a high-pressure synthesis

Journal of Advanced Dielectrics, 2022
Ceramic samples of BiFeO3-based perovskite solid solutions with the highly ordered complex perovskites [Formula: see text][Formula: see text]O3(PFS) and [Formula: see text][Formula: see text]O3 (SFS) were obtained using high-pressure synthesis at 4–6 GPa.
S. I. Raevskaya, N. M. Olekhnovich, A. V. Pushkarev, Y. V. Radyush, S. P. Kubrin, V. V. Titov, E. A. Artseva, I. P. Raevski, I. N. Zakharchenko, C-C. Chou, M. A. Malitskaya   +10 more
doaj   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

Advanced Functional Materials, EarlyView.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li, Changshun Dai, He Qi, Jiecheng Liu, Xiaoming Shi, Heng Zhou, Qiong Yang, Mingsheng Long, Lei Shan, Chunchang Wang, Jianli Wang, Zhenxiang Cheng   +11 more
wiley   +1 more source

Phase formation, structure and dielectric properties of ceramics (Na0.5Bi0.5)TiO3–(K0.5Na0.5)NbO3–BiFeO3 [PDF]

Journal of Advanced Dielectrics, 2016
Influence of BiFeO3 (BF) on phase formation, unit cell parameters, microstructure, dielectric and ferroelectric properties of solid solutions close to the morphotropic phase boundary in the (Na0.5Bi0.5)TiO3–(K0.5Na0.5)NbO3 system additionally modified by
G. M. Kaleva, A. V. Mosunov, N. V. Sadovskaya, E. D. Politova, S. Yu. Stefanovich   +4 more
doaj   +1 more source