Phase transitions and magnetic domain coexistence in Nd0.5Sr0.5MnO3 thin films
Phase transitions and magnetic domain coexistence in Nd0.5Sr0.5MnO3 thin films
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DOI：
10.1016/j.jmmm.2019.166116
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发表时间：
2020-03
影响因子：
2.7
通讯作者：
I-Ting Chiu;Alexander M. Kane;R. Chopdekar;Peifen Lyu;Ankita Mehta;C. Rouleau;A. N’Diaye;E. Arenholz;Y. Takamura
中科院分区：
文献类型：
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作者：
I-Ting Chiu;Alexander M. Kane;R. Chopdekar;Peifen Lyu;Ankita Mehta;C. Rouleau;A. N’Diaye;E. Arenholz;Y. Takamura
研究了在（110）取向SrTiO 3衬底上生长的钙钛矿氧化物Nd 0. 5Sr 0. 5 MnO 3（NSMO）薄膜的物理性质。在块状形式，NSMO显示耦合的磁性和电子从顺磁/绝缘体铁磁（FM）/金属，然后反铁磁（AFM）/电荷有序绝缘体随着温度的下降。在薄膜中，AFM有序化仅发生在薄膜处于各向异性应变状态时，例如在（110）取向的立方衬底上获得的薄膜。在这项工作中，共振X射线反射率，软X射线光电子显微镜（X-PEEM），和磁力测量表明，NSMO膜显示垂直和横向磁相分离。具体地说，该膜由具有不同密度和磁性的三层组成。的FM和AFM性能的主要NSMO层探测作为温度的函数，使用软X射线磁谱，和共存的横向FM和AFM域证明在110 K，使用X-PEEM。
We present a study of the physical properties of perovskite oxide Nd0.5Sr0.5MnO3(NSMO) thin films grown on (110)-oriented SrTiO3substrates. In bulk form, NSMO displays coupled magnetic and electronic transitions from paramagnetic/insulator to ferromagnetic (FM)/metal and then to antiferromagnetic (AFM)/charge-ordered insulator with decreasing temperature. In thin films, the AFM ordering only occurs when the films exist in an anisotropic strain state such as those obtained on (110)-oriented cubic substrates. In this work, resonant X-ray reflectivity, soft X-ray photoemission electron microscopy (X-PEEM), and magnetometry measurements showed that the NSMO film displays both vertical and lateral magnetic phase separation. Specifically, the film consists of three layers with different density and magnetic properties. The FM and AFM properties of the main NSMO layer were probed as a function of temperature using soft X-ray magnetic spectroscopy, and the coexistence of lateral FM and AFM domains was demonstrated at 110 K using X-PEEM.