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Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders.

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders.
นักวิจัย : Ding, J. F. , Lebedev, O. I. , Turner, S. , Tian, Y. F. , Hu, W. J. , Seo, J. W. , Panagopoulos, C. , Prellier, W. , Tendeloo, G. Van. , Wu, T.
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2556
อ้างอิง : Ding, J. F., Lebedev, O. I., Turner, S., Tian, Y. F., Hu, W. J., Seo, J. W., et al. (2013). Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders. Physical Review B - Condensed Matter and Materials Physics, 87(5), 054428-. , http://hdl.handle.net/10220/18703 , http://dx.doi.org/10.1103/PhysRevB.87.054428
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical review B - condensed matter and materials physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The magnetic properties of manganite bilayers composed of G-type antiferromagnetic (AFM) SrMnO3 and double-exchange ferromagnetic (FM) La0.7Sr0.3MnO3 are studied. A spin-glass state is observed as a result of competing magnetic orders and spin frustration at the La0.7Sr0.3MnO3/SrMnO3 interface. The dependence of the irreversible temperature on the cooling magnetic field follows the Almeida-Thouless line. Although an ideal G-type AFM SrMnO3 is featured with a compensated spin configuration, the bilayers exhibit exchange bias below the spin glass freezing temperature, which is much lower than the Néel temperature of SMO, indicating that the exchange bias is strongly correlated with the spin glass state. The results indicate that the spin frustration that originates from the competition between the AFM super-exchange and the FM double-exchange interactions can induce a strong magnetic anisotropy at the La0.7Sr0.3MnO3/SrMnO3 interface.

NRF (Natl Research Foundation, S’pore)

บรรณานุกรม :
Ding, J. F. , Lebedev, O. I. , Turner, S. , Tian, Y. F. , Hu, W. J. , Seo, J. W. , Panagopoulos, C. , Prellier, W. , Tendeloo, G. Van. , Wu, T. . (2556). Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders..
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Ding, J. F. , Lebedev, O. I. , Turner, S. , Tian, Y. F. , Hu, W. J. , Seo, J. W. , Panagopoulos, C. , Prellier, W. , Tendeloo, G. Van. , Wu, T. . 2556. "Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders.".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Ding, J. F. , Lebedev, O. I. , Turner, S. , Tian, Y. F. , Hu, W. J. , Seo, J. W. , Panagopoulos, C. , Prellier, W. , Tendeloo, G. Van. , Wu, T. . "Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders.."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2556. Print.
Ding, J. F. , Lebedev, O. I. , Turner, S. , Tian, Y. F. , Hu, W. J. , Seo, J. W. , Panagopoulos, C. , Prellier, W. , Tendeloo, G. Van. , Wu, T. . Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders.. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2556.