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首页> 外文期刊>Thin Solid Films >Preparation and magnetic properties of Bi_(m+1)Fe_(m-3)Ti_3O_(3m+3) thin films with magnetic order above room temperature
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Preparation and magnetic properties of Bi_(m+1)Fe_(m-3)Ti_3O_(3m+3) thin films with magnetic order above room temperature

机译：室温以上磁性序的Bi_（m + 1）Fe_（m-3）Ti_3O_（3m + 3）薄膜的制备和磁性

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摘要

Thin films of Bi_(m+1)Fe_(m-3)Ti_3O_(3m+3) (BFTO) with m§9 have been successfully grown on (100) SrTiO_3 by chemical solution deposition. These films had the c axis normal to the film plane. The conversion electron Mossbauer spectoroscopy (CEMS) showed that the spectra of BFTO thin films exhibit an asymmetric quadrupole doublet for m = 8 at 300 K, indicative of being paramagnetic, while, for m = 9, clearly show six hyperfine lines indicating presence of magnetic order at 300 K. From the intensity ratio of asymmetric peaks, the polarization axis of BFTO films with m ≥ 8 was deduced to be likely along <101 > of the perovskite-like unit. On the other hand, it was found from the spectral fitting that the BFTO thin film with m = 9 has the Neel temperature around 310 K and the spin axis making an angle of about 60° to the c-axis. These i ndicate that the BFTO (m = 9) thin film is a promising candidate for room-temperature multiferroics.
机译：通过化学溶液沉积已成功在（100）SrTiO_3上生长了具有m§9的Bi_（m + 1）Fe_（m-3）Ti_3O_（3m + 3）（BFTO）薄膜。这些胶片的c轴垂直于胶片平面。转换电子Mossbauer光谱仪（CEMS）显示，BFTO薄膜的光谱在300 K时m = 8时显示出不对称的四极双峰，表明是顺磁性的，而对于m = 9时，清楚地显示出六条超细线，表明存在磁性根据不对称峰的强度比，推导m≥8的BFTO薄膜的偏振轴可能沿着钙钛矿样单元的<101>。另一方面，从光谱拟合中发现，m ＝ 9的BFTO薄膜的尼尔温度为约310K，自旋轴与c轴成约60°角。这些表明BFTO（m = 9）薄膜是室温多铁性材料的有希望的候选者。

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  • 来源
    《Thin Solid Films》 |2011年第23期|p.8334-8337|共4页
  • 作者

    Y. Shimizu; M. Gomi; K. Yamaguchi; T. Yokota; K. Mibu;

  • 作者单位

    School of Mater. Sri. and Engineering, Nagoya Inst. of Tech., Cokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    School of Mater. Sri. and Engineering, Nagoya Inst. of Tech., Cokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    School of Mater. Sri. and Engineering, Nagoya Inst. of Tech., Cokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    School of Mater. Sri. and Engineering, Nagoya Inst. of Tech., Cokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    School of Engineering Phys. Electron, and Mechan, Nagoya Inst of Tech., Cokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

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  • 正文语种 eng
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  • 关键词

    multiferroics; ferroelectric antiferromagnet; aurivillius family; bi oxides; chemical solution deposition; epitaxy; mossbauer spectoroscopy;

    机译：多铁铁电反铁磁体aurivillius家庭;双氧化物化学溶液沉积;外延莫斯鲍尔光谱;

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