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Peer-reviewedCC BYAdvanced Materials Interfaces

Enhanced Magnetism in Cation‐Modulated Manganite Heterostructures

  • Sangkyun Ryu1
  • R. F. Need2
  • Brian Kirby3
  • Tae‐Yeol Jeon4
  • Younghak Kim4
  • Jin H. Cho5
  • Sungkyun Park6
  • Hyoungjeen Jeen6
6 affiliations
  1. 1Research Center for Dielectric and Advanced Matter Physics Pusan National University Busan South Korea
  2. 2Qualcomm Institute University of California San Diego La Jolla CA USA
  3. 3NIST Center for Neutron Research National Institute of Standards and Technology Gaithersburg MD USA
  4. 4Pohang Accelerator Laboratory POSTECH Pohang South Korea
  5. 5Department of Physics Education Pusan National University Busan South Korea
  6. 6Department of Physics Pusan National University Busan South Korea
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Abstract

Transition metal oxides exhibit a variety of physical properties that are tuned by external stimuli such as electric and magnetic fields, mechanical stress, and the formation of heterointerfaces. Oxide superlattices provide a useful system for amplifying the interfacial effects. These effects often become more pronounced with decreasing thickness of the individual layer and increasing number of interfaces. In this study, we investigated the changes in the magnetic properties of cation‐modulated manganite superlattices fabricated from a single manganite target by varying the oxygen partial pressure, resulting in the modulation of cation stoichiometry. Using superconducting quantum interference device (SQUID) magnetometry, we found that the magnetization in superlattices of cation‐modulated manganites increased by up to 36.8 ± 0.4% relative to the volume‐weighted average of the corresponding single‐layer films. Polarized neutron reflectometry further revealed a larger average magnetic response in the shorter‐period superlattice, consistent with the trend observed by SQUID magnetometry. This observation is consistent with the interface‐related magnetic interactions between the layers. These findings point to an interface‐driven route to enhance magnetization in cation‐modulated manganite superlattices and show that the effect is tunable by altering the number of interfaces.

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Cite

BibTeXRIS
BibTeX
@article{ryu2026enhanced,
  title = {{Enhanced Magnetism in Cation‐Modulated Manganite Heterostructures}},
  author = {Sangkyun Ryu and R. F. Need and Brian Kirby and Tae‐Yeol Jeon and Younghak Kim and Jin H. Cho and Sungkyun Park and Hyoungjeen Jeen},
  journal = {Advanced Materials Interfaces},
  year = {2026},
  month = oct,
  doi = {10.1002/admi.70672},
  url = {https://doi.org/10.1002/admi.70672},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Enhanced Magnetism in Cation‐Modulated Manganite Heterostructures
AU  - Sangkyun Ryu
AU  - R. F. Need
AU  - Brian Kirby
AU  - Tae‐Yeol Jeon
AU  - Younghak Kim
AU  - Jin H. Cho
AU  - Sungkyun Park
AU  - Hyoungjeen Jeen
PY  - 2026
DA  - 2026/10/26
JO  - Advanced Materials Interfaces
DO  - 10.1002/admi.70672
UR  - https://doi.org/10.1002/admi.70672
AB  - Transition metal oxides exhibit a variety of physical properties that are tuned by external stimuli such as electric and magnetic fields, mechanical stress, and the formation of heterointerfaces. Oxide superlattices provide a useful system for amplifying the interfacial effects. These effects often become more pronounced with decreasing thickness of the individual layer and increasing number of interfaces. In this study, we investigated the changes in the magnetic properties of cation‐modulated manganite superlattices fabricated from a single manganite target by varying the oxygen partial pressure, resulting in the modulation of cation stoichiometry. Using superconducting quantum interference device (SQUID) magnetometry, we found that the magnetization in superlattices of cation‐modulated manganites increased by up to 36.8 ± 0.4% relative to the volume‐weighted average of the corresponding single‐layer films. Polarized neutron reflectometry further revealed a larger average magnetic response in the shorter‐period superlattice, consistent with the trend observed by SQUID magnetometry. This observation is consistent with the interface‐related magnetic interactions between the layers. These findings point to an interface‐driven route to enhance magnetization in cation‐modulated manganite superlattices and show that the effect is tunable by altering the number of interfaces.
SN  - 2196-7350
ER  -