Exchange coupling and coercivity enhancement in cuprate/manganite bilayers

J. F. Ding; Y. F. Tian; Weijin Hu; W. N. Lin; T. Wu

doi:10.1063/1.4788719

Exchange coupling and coercivity enhancement in cuprate/manganite bilayers

J. F. Ding^*, Y. F. Tian, Weijin Hu, W. N. Lin, T. Wu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We report on the magnetic properties of cuprate/manganite bilayers composed of antiferromagnetic (AFM) La₂CuO₄ and ferromagnetic La_0.70Sr_0.30MnO₃. The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La _0.70Sr_0.30MnO₃ single layer and reaches 705 Oe at 5 K. The dependence of coercivity on the AFM layer thickness indicates that the enhancement cannot be explained by the interfacial charge diffusion. Our results suggest that the exchange coupling between Mn and Cu spins and the magnetic frustration at the La₂CuO₄/La _0.70Sr_0.30MnO₃ interface must be considered to harness the properties of cuprate/manganite heterostructures.

Original language	English (US)
Article number	032401
Journal	Applied Physics Letters
Volume	102
Issue number	3
DOIs	https://doi.org/10.1063/1.4788719
State	Published - Jan 21 2013
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Exchange coupling and coercivity enhancement in cuprate/manganite bilayers",

abstract = "We report on the magnetic properties of cuprate/manganite bilayers composed of antiferromagnetic (AFM) La2CuO4 and ferromagnetic La0.70Sr0.30MnO3. The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La 0.70Sr0.30MnO3 single layer and reaches 705 Oe at 5 K. The dependence of coercivity on the AFM layer thickness indicates that the enhancement cannot be explained by the interfacial charge diffusion. Our results suggest that the exchange coupling between Mn and Cu spins and the magnetic frustration at the La2CuO4/La 0.70Sr0.30MnO3 interface must be considered to harness the properties of cuprate/manganite heterostructures.",

author = "Ding, {J. F.} and Tian, {Y. F.} and Weijin Hu and Lin, {W. N.} and T. Wu",

note = "Funding Information: We acknowledge the financial support from the Singapore National Research Foundation.",

year = "2013",

month = jan,

day = "21",

doi = "10.1063/1.4788719",

language = "English (US)",

volume = "102",

journal = "Applied Physics Letters",

issn = "0003-6951",

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TY - JOUR

T1 - Exchange coupling and coercivity enhancement in cuprate/manganite bilayers

AU - Ding, J. F.

AU - Tian, Y. F.

AU - Hu, Weijin

AU - Lin, W. N.

AU - Wu, T.

N1 - Funding Information: We acknowledge the financial support from the Singapore National Research Foundation.

PY - 2013/1/21

Y1 - 2013/1/21

N2 - We report on the magnetic properties of cuprate/manganite bilayers composed of antiferromagnetic (AFM) La2CuO4 and ferromagnetic La0.70Sr0.30MnO3. The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La 0.70Sr0.30MnO3 single layer and reaches 705 Oe at 5 K. The dependence of coercivity on the AFM layer thickness indicates that the enhancement cannot be explained by the interfacial charge diffusion. Our results suggest that the exchange coupling between Mn and Cu spins and the magnetic frustration at the La2CuO4/La 0.70Sr0.30MnO3 interface must be considered to harness the properties of cuprate/manganite heterostructures.

AB - We report on the magnetic properties of cuprate/manganite bilayers composed of antiferromagnetic (AFM) La2CuO4 and ferromagnetic La0.70Sr0.30MnO3. The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La 0.70Sr0.30MnO3 single layer and reaches 705 Oe at 5 K. The dependence of coercivity on the AFM layer thickness indicates that the enhancement cannot be explained by the interfacial charge diffusion. Our results suggest that the exchange coupling between Mn and Cu spins and the magnetic frustration at the La2CuO4/La 0.70Sr0.30MnO3 interface must be considered to harness the properties of cuprate/manganite heterostructures.

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U2 - 10.1063/1.4788719

DO - 10.1063/1.4788719

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VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032401

ER -

Exchange coupling and coercivity enhancement in cuprate/manganite bilayers

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