Interfacial magnetic coupling in hetero-structure of Fe/double-perovskite NdBaMn 2 O 6 single crystal

W. C. Lin, C. L. Tsai, K. Ogawa, S. Yamada, Ashish C. Gandhi, J. G. Lin

Research output: Contribution to journalArticle

Abstract

The interfacial magnetic coupling between metallic Fe and the double-perovskite NdBaMn 2 O 6 single crystal was investigated in the heterostructure of 4-nm Pd/10-nm Fe/NdBaMn 2 O 6 . A considerable magnetic coupling effect was observed in the temperature range coincident with the magnetic phase transition of NdBaMn 2 O 6 . When the temperature was elevated above 270 K, NdBaMn 2 O 6 transformed from a state of antiferromagnetic fluctuating domains to a superparamagnetism-like (ferromagnetic fluctuation) state with high magnetic susceptibility. Concurrently, the interfacial magnetic coupling between the Fe layer and the NdBaMn 2 O 6 crystal was observed, as indicated by the considerable squareness reduction and coercivity enhancement in the Fe layer. Moreover, the presence of the Fe layer changed the magnetic structure of NdBaMn 2 O 6 from conventional 4-fold symmetry to 2-fold symmetry. These observations offer applicable insights into the mutual magnetic interaction in the heterostructures of metallic ferromagnetism/perovskite materials.

Original languageEnglish
Article number162403
JournalApplied Physics Letters
Volume112
Issue number16
DOIs
Publication statusPublished - 2018 Apr 16

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single crystals
symmetry
ferromagnetism
coercivity
magnetic permeability
temperature
augmentation
crystals
interactions

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  • Physics and Astronomy (miscellaneous)

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Interfacial magnetic coupling in hetero-structure of Fe/double-perovskite NdBaMn 2 O 6 single crystal. / Lin, W. C.; Tsai, C. L.; Ogawa, K.; Yamada, S.; Gandhi, Ashish C.; Lin, J. G.

In: Applied Physics Letters, Vol. 112, No. 16, 162403, 16.04.2018.

Research output: Contribution to journalArticle

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AU - Gandhi, Ashish C.

AU - Lin, J. G.

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N2 - The interfacial magnetic coupling between metallic Fe and the double-perovskite NdBaMn 2 O 6 single crystal was investigated in the heterostructure of 4-nm Pd/10-nm Fe/NdBaMn 2 O 6 . A considerable magnetic coupling effect was observed in the temperature range coincident with the magnetic phase transition of NdBaMn 2 O 6 . When the temperature was elevated above 270 K, NdBaMn 2 O 6 transformed from a state of antiferromagnetic fluctuating domains to a superparamagnetism-like (ferromagnetic fluctuation) state with high magnetic susceptibility. Concurrently, the interfacial magnetic coupling between the Fe layer and the NdBaMn 2 O 6 crystal was observed, as indicated by the considerable squareness reduction and coercivity enhancement in the Fe layer. Moreover, the presence of the Fe layer changed the magnetic structure of NdBaMn 2 O 6 from conventional 4-fold symmetry to 2-fold symmetry. These observations offer applicable insights into the mutual magnetic interaction in the heterostructures of metallic ferromagnetism/perovskite materials.

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