Magnetoelectric Effects in Ferromagnetic Oxides with the Double Perovskite Structure
双钙钛矿结构铁磁氧化物的磁电效应
基本信息
- 批准号:18540342
- 负责人:
- 金额:$ 2.45万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2006
- 资助国家:日本
- 起止时间:2006 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have investigated (1) the crystal structure and the magnetic-dielectric properties, (2) competition of the ferromagnetism and ferroelectricity, and (3) the magnetoelectric effects of La_<1-x>Bi_xMn_<0.5>Ni_<0.5>O_3 by means of the x-ray diffraction, magnetic and electric measurements, and ^<55>Mn NMR.(1) Polycrystalline La_<1-x>Bi_xMn_<0.5>Ni_<0.5>O_3 with the double perovskite structure has been successfully synthesized for x=0〜0.9 by soft chemical synthesis at ambient pressure. The dielectric constant increases and the ferromagnetic Curie temperature (T_<CM>) decreases with increasing x.(2) It has been clarified through NMR of ^<55>Mn in REMn_<0.5>(Ni_<1-x>Mg_x)_<0.5>Ni_<0.5>O_3 (RE = rare earth elements) that the covalency parameter, f(RE), for Mn^<4+>-O^<2->-Ni^<2+> bond in the double perovskite is evaluated from the hyperfine magnetic field, H_<HF>, at ^<55>Mn. Based on the knowledge, the covalency parameter, f (x), for the bond in La_<1-x>Bi_xMn_<0.5>Ni_<0.5>Ni_<0.5>O_3 is fou … More nd to decrease with increasing x by ^<55>Mn NMR study of the oxides. The decrease of T_<CM> with increasing xis naturally explained with the decrease of f(x).The decrease of f (x) is attributed to the strong covalency of Bi^<3+>-O^<2-> bond compared with La^<3+>-O^<2-> bond; more electrons of O^<2-> ions are attracted to and populate in Bi^<3+>-O^<2-> bond resulting in deficiency of electrons in Mn^<4+>-O^<2->-Ni^<2+> bond. The ferroelectricity arising from the covalency of Bi^<3+>-O^<2-> bond and the ferromagnetism arising from that of Mn^<4+>-O^<2->-Ni^<2+> bond compete with each other through the competition of the covalencies of both bonds.(3) For x≧0.5, the dielectric constant increases in a magnetic field near T_<CM>. For x=0.7, the increment of the dielectric constant amounts to 7% at T_<CM> in 9 T. The temperature and the magnetic field dependence of the dielectric constant, including the frequency dispersion, has interpreted based on the Maxwell-Wagner model assuming an inhomogeneity of the sample which contains domains with relatively high dielectric constant dispersed in the material with negative magneto-resistance. Less
本文研究了La_<;1-x>;Bi_xMn_<;0.5>;Ni_<;0.5>;O_3的晶体结构和磁介电性能,(2)铁磁性和铁电性的竞争,(3)用X射线衍射、磁电测量和核磁共振研究了其磁电效应:(1)多晶La_t;采用常压软化学合成法成功地合成了x=0~0.9时具有双钙钛矿结构的0.5>;O_3。介电常数随x的增加而增大,铁磁居里温度(T<;Cm>;)随x的增加而降低。(2)通过对REMn_<;0.5>;(Ni_<;1-x>;Mg_x)_<;0.5>;Ni_<;0.5>;O_3(RE=稀土元素)中^<;55>;Mn的核磁共振研究表明,其共价性参数f(RE)为:双钙钛矿中的-Ni^<;2+>;键是由超精细磁场H_<;Hf>;在^<;55>;Mn。基于该知识,La_<;1-x>;Bi_xMn_<;0.5>;Ni_<;0.5>;Ni_<;0.5>;O_3中键的共价性参数f(X)为…用^<;55>;Mn对氧化物的核磁共振研究。F(X)的减小是由于Bi^<;3+>;-O^<;2->;键与La^<;3+>;-O^<;-2->;键相比,Bi^<;3+>;-O^<;-O^<;2->;键的共价性较强;O^<;2->;离子的电子更多地被吸引和填充在Bi^<;3+>;-O^<;2->;键上,从而导致了Mn^<;中电子的不足。4+>;-O^<;2->;-Ni^<;2+>;键。由Bi^<;3+>;-O^<;2->;键的共价性引起的铁电性与由Mn^<;4+>;-O^<;2->;-Ni^<;2+>;键的共价性引起的铁磁性相互竞争。(3)对于x≧0.5时,在接近T<;CM>;的磁场中,介电常数增大。当x=0.7时,介电常数在9T时的增量达7%,介电常数与温度和磁场的关系,包括频率色散,用麦克斯韦-瓦格纳模型进行了解释,该模型假定样品中含有较高介电常数的磁区分散在具有负磁阻的材料中。较少
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
La_<1-x> Bi_xMn_<0. 5> Ni_<0. 5> O_3の<55>^Mn NMR
La_<1-x>Bi_xMn_<0>Ni_<0>O_3<55>^Mn NMR。
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:河内良行;小山佳一;晴被宏大;田中遼司;戎修二;永田正一;I. V. Solovyev;戎修二;浅井吉蔵,川上貴史,榎下峻平,鴨川征史,塩沢正規,小林義彦
- 通讯作者:浅井吉蔵,川上貴史,榎下峻平,鴨川征史,塩沢正規,小林義彦
Crystal Structure, Magnetism, and Dielectric Properties of La1-xBixNi0.5Mn0.5O3
La1-xBixNi0.5Mn0.5O3 的晶体结构、磁性和介电性能
- DOI:10.1143/jpsj.77.084701
- 发表时间:2008
- 期刊:
- 影响因子:1.7
- 作者:Y. Kobayashi;M. Shiozawa;Keisuke Sato;K. Abe;K. Asai
- 通讯作者:K. Asai
Ba_<1-x>Sr_xRuO_3の結晶構造と磁性・電子輸送現象
Ba_<1-x>Sr_xRuO_3的晶体结构、磁性和电子输运现象
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:金子徹也;小林義彦;浅井吉蔵
- 通讯作者:浅井吉蔵
Hyperfine Magnetic Field at ^55Mn in Ferromagnetic Perovskites REMn_<0.5>(Ni_<1-x>Mg_x)_<0.5>O_3 with RE = La, Pr, Nd, and Eu : RE Dependence of Supertransferred Hyperfine Interaction.
铁磁钙钛矿 REMn_<0.5>(Ni_<1-x>Mg_x)_<0.5>O_3 中 ^55Mn 处的超精细磁场,其中 RE = La、Pr、Nd 和 Eu:超转移超精细相互作用的 RE 依赖性。
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:T. Kawakami;S. Enoshita;M. Kamogawa;Y. Kobayashi;K. Asai
- 通讯作者:K. Asai
High-Field Magnetostriction of the Spin-State Transition Compound LaCoO_3
自旋态过渡化合物LaCoO_3的高场磁致伸缩
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:T. Kawakami;S. Enoshita;M. Kamogawa;Y. Kobayashi;K. Asai;M. Matsukawa;K. Sato等
- 通讯作者:K. Sato等
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
ASAI Kichizo其他文献
ASAI Kichizo的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('ASAI Kichizo', 18)}}的其他基金
Investigation of the Spin-Phase Separation in LaCoO3 by High-field Magnetization
高场磁化研究 LaCoO3 中的自旋相分离
- 批准号:
24540365 - 财政年份:2012
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on the Anomalous Magnetoelectric Effect of Yttrium Iron Garnet by 57Fe NMR
57Fe NMR研究钇铁石榴石的反常磁电效应
- 批准号:
20540332 - 财政年份:2008
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Phonon study by neutron scattering on the orbital-order of the intermediate-spin-state of Co^<3+> and the spin-state transition
通过中子散射研究 Co^<3> 中间自旋态轨道序和自旋态跃迁的声子
- 批准号:
16540310 - 财政年份:2004
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Lattice anomaly associaterd with the magnetic order in a re-entrant superconductor Ho_<1-x>Y_xNi_2B_2C
重入超导体 Ho_<1-x>Y_xNi_2B_2C 中与磁序相关的晶格异常
- 批准号:
14540331 - 财政年份:2002
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on Spin-State Transitions in LaCoO_3
LaCoO_3自旋态跃迁的研究
- 批准号:
08640449 - 财政年份:1996
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
相似海外基金
FuSe: Ultra-Low-Energy Logic-in-Memory Computing using Multiferroic Spintronics
FuSe:使用多铁自旋电子学的超低能耗内存逻辑计算
- 批准号:
2329111 - 财政年份:2023
- 资助金额:
$ 2.45万 - 项目类别:
Continuing Grant
Development of Low Power Consumption Multiferroic Memory using Experimental and Computational Approaches
使用实验和计算方法开发低功耗多铁存储器
- 批准号:
23KJ0919 - 财政年份:2023
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for JSPS Fellows
Development of room temperature multiferroic properties of oxyfluoride thin films
氟氧化物薄膜室温多铁性的研究进展
- 批准号:
23H01846 - 财政年份:2023
- 资助金额:
$ 2.45万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Heteromolecular Interface Design for Better Multiferroic Molecular Spintronics
更好的多铁性分子自旋电子学的异分子界面设计
- 批准号:
2317464 - 财政年份:2023
- 资助金额:
$ 2.45万 - 项目类别:
Standard Grant
From Multiferroic Composite Oxides to Composite Thin Films Fabrication
从多铁复合氧化物到复合薄膜制造
- 批准号:
RGPIN-2018-04438 - 财政年份:2022
- 资助金额:
$ 2.45万 - 项目类别:
Discovery Grants Program - Individual
SWIFT: Electric Field Controlled Integrated Multiferroic Radio Frequency Devices for Interference Immune Broadband Wireless Systems
SWIFT:用于抗干扰宽带无线系统的电场控制集成多铁射频器件
- 批准号:
2229440 - 财政年份:2022
- 资助金额:
$ 2.45万 - 项目类别:
Standard Grant
EPITAXY, INTERFACES, AND DOMAIN BOUNDARIES OF ROOM TEMPERATURE MULTIFERROIC MAGNETOELECTRIC FILMS AND HETEROSTRUCTURES
室温多铁性磁电薄膜和异质结构的外延、界面和磁畴边界
- 批准号:
RGPIN-2019-07058 - 财政年份:2022
- 资助金额:
$ 2.45万 - 项目类别:
Discovery Grants Program - Individual
Topotactic Control of Magnetism in Multiferroic and Skyrmion Materials
多铁性和斯格明子材料中磁性的拓扑控制
- 批准号:
DP210102346 - 财政年份:2021
- 资助金额:
$ 2.45万 - 项目类别:
Discovery Projects
Multiferroic Skyrmion Materials for Next Generation Nanoelectronics
用于下一代纳米电子学的多铁斯格明子材料
- 批准号:
DP210102554 - 财政年份:2021
- 资助金额:
$ 2.45万 - 项目类别:
Discovery Projects
EPITAXY, INTERFACES, AND DOMAIN BOUNDARIES OF ROOM TEMPERATURE MULTIFERROIC MAGNETOELECTRIC FILMS AND HETEROSTRUCTURES
室温多铁性磁电薄膜和异质结构的外延、界面和磁畴边界
- 批准号:
RGPIN-2019-07058 - 财政年份:2021
- 资助金额:
$ 2.45万 - 项目类别:
Discovery Grants Program - Individual














{{item.name}}会员




