首页> 外文期刊>Applied Physics Letters >Large remanent polarization and enhanced magnetic properties in non-quenched Bi(Fe,Ga)O_3-(Ba,Ca)(Zr,Ti)O_3 multiferroic ceramics
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Large remanent polarization and enhanced magnetic properties in non-quenched Bi(Fe,Ga)O_3-(Ba,Ca)(Zr,Ti)O_3 multiferroic ceramics

机译:非淬火Bi(Fe,Ga)O_3-(Ba,Ca)(Zr,Ti)O_3多铁陶瓷中的大剩余极化和增强的磁性能

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摘要

It is a tough issue to release the underlying polarization and magnetization simultaneously in non-quenched polycrystalline BiFeO_3 ceramics due to their high conductivity, intensive domain-wall clamping, and long range spiral spin arrangement. Here, 0.75BiFe_(0.98)Ga_(0.02)O_3-0.25(Ba_(0.85)Ca_(0.15)) (Zr_(0.10)Ti_(0.90))O_3 multiferroic ceramics were fabricated by a conventional solid-state reaction with a non-quenched method. The crystalline structure analysis revealed that the ceramics showed a rhombohedral (R3c) perovskite structure. Superior ferroelectricity was observed in the ceramics with high remanent polarization (44 μC/cm~2), which has been re-verified by PUND measurement to exclude the contribution of leakage current. Moreover, enhanced ferromagnetism with remanent magnetization (0.20 emu/g) was also obtained at 300 K. We have demonstrated that the observed macroscopic magnetization was attributed to the canting of the spins due to melting away of the spiral structure rather than other Fe-containing impurity phases. The excellent ferroelectric and ferromagnetic performance suggests that this non-quenched lead-free BiFeO_3-based ceramics are quite promising multiferroic materials.
机译:在非淬火多晶BiFeO_3陶瓷中,要同时释放潜在的极化和磁化是一个难题,这是因为它们具有高导电性,密集的畴壁夹持和长距离螺旋自旋排列。在此,通过常规的固态反应在非铁氧体的条件下制备了0.75BiFe_(0.98)Ga_(0.02)O_3-0.25(Ba_(0.85)Ca_(0.15))(Zr_(0.10)Ti_(0.90))O_3多铁陶瓷。淬火法。晶体结构分析表明,陶瓷表现出菱形(R3c)钙钛矿结构。在高剩余极化率(44μC/ cm〜2)的陶瓷中观察到优异的铁电性,已通过PUND测量对其进行了重新验证,以排除漏电流的影响。此外,在300 K时还获得了具有剩余磁化强度(0.20 emu / g)的增强铁磁性。我们证明,观察到的宏观磁化强度归因于自旋的倾斜,这是由于螺旋结构的熔化而不是其他含Fe引起的。杂质相。优异的铁电和铁磁性能表明,这种非淬火的无铅BiFeO_3基陶瓷是很有前途的多铁材料。

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  • 来源
    《Applied Physics Letters》 |2017年第11期|112902.1-112902.5|共5页
  • 作者单位

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China;

    Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 入库时间 2022-08-18 03:13:59

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