arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1010.5482cond-mat.str-elcond-mat.mtrl-sci
收藏

相分离(La $_{0.4}$ Pr $_{0.6}$)$_{0.67}$ Ca $_{0.33}$ MnO $_{3}$薄膜中由面内磁各向异性引起的单畴到多畴转变

Single domain to multi-domain transition due to in-plane magnetic anisotropy in phase separated (La$_{0.4}$Pr$_{0.6}$)$_{0.67}$Ca$_{0.33}$MnO$_{3}$ thin films

Hyoungjeen Jeen, Amlan Biswas

摘要:

相分离的钙钛矿锰氧化物具有具有不同晶体结构、磁性和电子性质的竞争相。因此,应变效应在决定锰氧化物薄膜的磁性方面起着关键作用。本文报道了各向异性应力对相分离锰氧化物(La $_{0.4}$ Pr $_{0.6}$)$_{0.67}$ Ca $_{0.33}$ MnO $_{3}$磁性的影响。在面内各向异性应力下在(110)NdGaOPDMATHABMQ衬底上生长的($_{0.4}$ Pr $_{0.6}$)$_{0.67}$ Ca $_{0.33}$ MnO $_{3}$薄膜显示出面内磁各向异性和单畴到多畴转变随温度的变化。角度相关的磁化测量也表明,磁化反转发生主要是通过成核$&$传播机制。通过与在(001)SrLaGaOPDMATHABMS衬底上生长的($_{0.4}$ Pr $_{0.6}$)$_{0.67}$ $_{0.33}$ MnO $_{3}$薄膜的比较,证实了磁各向异性主要是由衬底诱导的各向异性应力引起的。我们的研究结果提出了在纳米磁性介质中存储磁信息的新途径。

英文摘要:

Phase separated perovskite manganites have competing phases with different crystal structures, magnetic and electronic properties. Hence, strain effects play a critical role in determining the magnetic properties of manganite thin films. Here we report the effect of anisotropic stress on the magnetic properties of the phase separated manganite (La$_{0.4}$Pr$_{0.6}$)$_{0.67}$Ca$_{0.33}$MnO$_{3}$. Thin films of (La$_{0.4}$Pr$_{0.6}$)$_{0.67}$Ca$_{0.33}$MnO$_{3}$ grown under anisotropic in-plane stress on (110) NdGaO$_{3}$ substrates display in-plane mangetic anisotropy and single domain to multidomain transition as a function of temperature. Angle dependent magnetization measurements also show that the magnetization reversal occurs mainly through the nucleation $&$ propagation mechanism. By comparing the results with (La$_{0.4}$Pr$_{0.6}$)$_{0.67}$Ca$_{0.33}$MnO$_{3}$ thin films grown on (001) SrLaGaO$_{4}$ substrates, we have confirmed that the magnetic anisotropy is mainly due to substrate induced anisotropic stress. Our results suggest novel avenues for storing magnetic information in nanoscale magnetic media.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑