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arXiv 0709.3518cond-mat.str-elcond-mat.mtrl-sci
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NiMn2O4-Fe3O4尖晶石界面的磁性

Magnetism of NiMn2O4-Fe3O4 Spinel Interfaces

B. B. Nelson-Cheeseman, R. V. Chopdekar, J. S. Bettinger, E. Arenholz, Y. Suzuki

摘要:

研究了NiMn_2O_4(NMO)-Fe_3O_4等结构尖晶石-尖晶石界面的磁性。虽然磁转变温度的NMO膜被保存,无论是散装和界面敏感的测量表明,界面具有很强的界面磁耦合到室温。NMO薄膜的铁磁转变温度为60 K,而NiFe_2 O_4和MnFe_2 O_4在室温下都是铁磁的。我们的实验结果表明,这些磁性能产生于一个薄的互扩散区(Fe,Mn,Ni)3 O 4在界面导致Mn和Ni的磁性能类似于MnFe 2 O 4和NiFe 2 O 4。

英文摘要:

We investigate the magnetic properties of the isostructural spinel-spinel interface of NiMn2O4(NMO)-Fe3O4. Although the magnetic transition temperature of the NMO film is preserved, both bulk and interface sensitive measurements demonstrate that the interface exhibits strong interfacial magnetic coupling up to room temperature. While NMO thin films have a ferrimagnetic transition temperature of 60K, both NiFe2O4 and MnFe2O4 are ferrimagnetic at room temperature. Our experimental results suggest that these magnetic properties arise from a thin interdiffused region of (Fe,Mn,Ni)3O4 at the interface leading to Mn and Ni magnetic properties similar to MnFe2O4 and NiFe2O4.

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。

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