- Address
- 305-0044 茨城県つくば市並木1-1 [アクセス]
研究内容
- Keywords
Multiferroic, High pressure, Memory elements
- Multiferroic and ferroelectric materials.
Mutriferroics are an interesting class of materials from viewpoints of application and basic physics. In multiferroics, two or all three of (anti)ferroelectricity, (anti)ferromagnetism, and ferroelasticity are observed in the same phase. We recently investigated ferroelectric, magnetic, and multiferroic properties of BiMO3 and PbMO3 prepared at high pressure of 6 GPa. Even in these simple systems we could find new compounds such as PbVO3, BiAlO3, BiGaO3, BiInO3, and 'BiVO3'. Some of them show promising ferroelectric properties. We could also clarify structural and magnetic properties of BiScO3, BiMnO3, and BiCrO3. In a very adaptive structural type of β-Ca3(PO4)2 that allows different substitution in all sublattices, ferroelectric and antiferroelectric properties were found depending on the cation compositions, e.g., Sr9Lu(VO4)7 and Ca9Fe(PO4)7 are ferroelectric and Sr9In(PO4)7 and Sr9NiLi(PO4)7 are antiferroelectric.
- Low-dimensional magnets.
One of the best-known so far one-dimensional Heisenberg S = 1/2 antiferromagnet was discovered, Sr2Cu(PO4)2. The importance of super-superexchange interactions in determination of magnetic lattice was demonstrated in a large number of compounds, e.g., MCuP2O7 (M = Ca, Sr, Ba, and Pb) and MCu2(PO4)2 (M = Sr and Pb). New spin-gap systems were found (MCu2(PO4)2 and Cu2PO4OH).
出版物2004年以降のNIMS所属における研究成果や出版物を表示しています。
論文
- Alexei A. Belik, Ran Liu, Andreas Dönni, Masahiko Tanaka, Kazunari Yamaura. Ferrimagnetic Ordering and Spin-Glass State in Diluted GdFeO3-Type Perovskites (Lu0.5Mn0.5)(Mn1−xTix)O3 with x = 0.25, 0.50, and 0.75. Materials. 16 [4] (2023) 1506 10.3390/ma16041506 Open Access
- Alexei A. Belik. Comments on the paper “Development of a novel triple perovskite barium bismuth molybdate material for thermistor-based applications”. Materials Science and Engineering: B. 303 (2024) 117315 10.1016/j.mseb.2024.117315
- Alexei A. Belik, Ran Liu, Kazunari Yamaura. Dielectric and Spin-Glass Magnetic Properties of the A-Site Columnar-Ordered Quadruple Perovskite Sm2CuMn(MnTi3)O12. Materials. 15 [23] (2022) 8306 10.3390/ma15238306 Open Access
書籍
- Masaki Azuma, Ikuya Yamada, YAMAURA, Kazunari, BELIK, Alexei, Takafumi Yamamoto, FUKUDA Masayuki. High pressure studies of transition metal oxides. Comprehensive Inorganic Chemistry III. Elsevier, 2023, 38.
会議録
- Alexey Sobolev, Igor Presniakov, Vyacheslav Rusakov, Alexey Belik, Mikhail Matsnev, Dmitry Gorchakov, Iana Glazkova. Mossbauer investigations of hyperfine interactions features of 57Fe nuclei in BiFeO3 ferrite. AIP CONFERENCE PROCEEDINGS. (2014) 10.1063/1.4898617
- Iana S. Glazkova, Alexey A. Belik, Alexey V. Sobolev, Igor A. Presniakov. 57Fe Mössbauer investigation of multiferroics BiMn0.96Fe0.04O3 and BiMn0.7Fe0.3O3. AIP CONFERENCE PROCEEDINGS. (2014) 10.1063/1.4898618
- I. Presniakov, V. Rusakov, A. Sobolev, A. Gapochka, M. Matsnev, A. A. Belik. 57Fe Mössbauer study of new multiferroic AgFeO2. HYPERFINE INTERACTIONS. (2014) 9999 10.1007/s10751-013-0948-9
口頭発表
- A.V. Sobolev, V.I. Nitsenko, I.S. Soboleva, I.A. Presniakov, BELIK, Alexei. Probe Mossbauer study of BiMn7O12 manganite. International Conference on Hyperfine Interactions and their Applications (HYPERFINE2023). 2023
- 山浦 一成, 橋爪充樹, ベリック アレクセイ, 石川明日香, 鈴木慎太郎, 田村隆治. 高圧急冷法を用いた酸化物系ハイパーマテリアルの探索. 第９回領域会議. 2022 招待講演
- BELIK Alexei, LIU Ran, YAMAURA Kazunari. Rise of A-site columnar-ordered quadruple perovskites A2A'A''B4O12. The 33rd Fall Meeting of The Ceramic Society of Japan / https://sites.google.com/view/fall33/English. 2020 招待講演
その他の文献
- Masaki AZUMA, Kengo OKA, Masahiko TSUJIMOTO, Takashi SAITO, Seiji SODA, Yuichi SHIMAKAWA, Mikio TAKANO, Seiji NIITAKA, ベリック アレクセイ, Shintaro ISHIWATA. Bi, Pb-3d遷移金属ペロブスカイトの構造物性研究. Nihon Kessho Gakkaishi. 49 [6] (2007) 335-340 10.5940/jcrsj.49.335
- 東 正樹, 幸坂祐生, 山田幾也, ベリック アレクセイ, 高木英典, 高野幹夫. 高圧下での酸化物単結晶育成と新物質探索. OYO BUTURI. 74 [1] (2005) 27-31
ナノアーキテクトニクス材料研究センター
Development of ferroelectric and multiferroic perovskite materials
High-pressure synthesis, Quadruple perovskites, Ferroelectrics, Multiferroics, New mechanisms
概要
Perovskite-structure materials played important and crucial roles in the development of today’s technologies. High-dielectric constant, ferroelectric, and giant magnetoresistance properties of perovskites are used on memory elements, the largest piezoelectric activity is utilized in different actuators and other devices. Perovskites show ferromagnetic, catalytic, and even superconducting properties. Recent hot topics include hybrid and halide perovskite-structure materials for solar cells. The field of oxide perovskites needs new ideas and new chemical compositions to explore new properties further.
新規性・独創性
• An advanced high-pressure high-temperature preparation method is used.
• New oxide perovskites can be obtained inaccessible by other methods.
• The presence of 3d-5d transition metals at different sites with new arrangements leads to new functionalities.
• New mechanisms of ferroelectric and magnetic transitions are realized.
内容
Using crystallographic information (such as, ionic radii of cations, site preferences of different cations, stoichiometry), we design new chemical compositions of perovskite oxides with targeted ferroelectric and magnetic properties. Our designs are then tested using the advanced high-pressure high-temperature preparation method. New perovskites are characterized by synchrotron X-ray and neutron diffraction methods to determine precise cation distributions and their basic, fundamental physical and chemical properties are investigated by different techniques available in NIMS and in collaboration with other institutions.
まとめ
We significantly expand and explore different subfamilies of perovskite-type materials. We aim at discovering new high-dielectric constant, ferroelectric, magnetic, multiferroic, and giant magnetoresistance materials. Such perovskites also represent a new playground to study complex interactions between different electronic degrees of freedom.
