Journal of Electronic Materials

, Volume 48, Issue 3, pp 1486–1491 | Cite as

Inverse Magnetoresistance Characteristic of Hybrid-Type Multilayer Structure of IrMn-Based Giant-Magnetoresistance Spin Valve and High-Tc Superconductor YBa2Cu3O7−x Film

  • Woo-Il Yang
  • Jong-Gu Choi
  • Sang-Suk LeeEmail author
5th International Conference of Asian Union of Magnetics Societies
Part of the following topical collections:
  1. 5th International Conference of Asian Union of Magnetics Societies (IcAUMS)


An antiferromagnetic-IrMn-based giant-magnetoresistance spin-valve (GMR-SV) multilayer on a high-temperature superconductor YBa2Cu3O7−x (YBCO) film was prepared using an ion-beam deposition system. The exchange bias coupling field (Hex), coercivity (HC), and magnetoresistance ratio (MR (%)) of the hybrid YBCO/GMR-SV multilayer structure were measured and compared at room temperature and 77 K. The MR ratio (%) of the hybrid YBCO/GMR-SV structure measured by the four-probe method at 77 K was − 9.3%, different from that of the conventional GMR-SV structure. The phenomenon of a negative MR (%) below the critical temperature (Tc) can be explained by the current-in-plane tunneling effect, when the resistance of the middle gap (G) layer between the high-temperature superconductor YBCO and GMR-SV multilayer reaches a value comparable to the plane resistance of the upper metal layer. In order to analyze the inversed MR (%) of the hybrid YBCO/GMR-SV multilayer structure, the equivalent circuit for each layer was constructed and an equation of the output voltage was derived.


Internal resistance spin-valve sensing current gap layer equivalent circuit 


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This study was supported by the National Research Foundation of Korea (NRF), funded by the Korea Government (Ministry of Education) with the Grant No. NRF-2016R1D1A1B03936289.


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  1. 1.Department of Applied Physics and ElectronicsSangji UniversityWonjuKorea
  2. 2.Department of Oriental Biomedical EngineeringSangji UniversityWonjuKorea

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