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相关论文: Large exchange bias after zero-field cooling from …

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We report on exchange bias effects in 10 nm particles of Pr0.5Ca0.5MnO3 which appear as a result of competing interactions between the ferromagnetic (FM)/anti-ferromagnetic (AFM) phases. The fascinating new observation is the demonstration…

介观与纳米尺度物理 · 物理学 2012-04-05 S. Narayana Jammalamadaka , S. S. Rao , S. V. Bhat , J. Vanacken , V. V. Moshchalkov

We have studied the zero magnetic field resistivity of unique high- mobility two-dimensional electron system in silicon. At very low electron density (but higher than some sample-dependent critical value, $n_{cr}\sim 10^{11}$ cm$^{-2}$),…

凝聚态物理 · 物理学 2009-10-22 S. V. Kravchenko , G. V. Kravchenko , J. E. Furneaux , V. M. Pudalov , M. D'Iorio

Ellerman Bombs (EBs) are often found co-spatial with bipolar photospheric magnetic fields. We use H$\alpha$ imaging spectroscopy along with Fe I 6302.5 \AA\ spectro-polarimetry from the Swedish 1-m Solar Telescope (SST), combined with data…

太阳与恒星天体物理 · 物理学 2016-05-31 A. Reid , M. Mathioudakis , J. G. Doyle , E. Scullion , V. Henriques , C. Nelson , T. Ray

We investigate the magnetocaloric effect obtained by the rotation of a magnetic field applied to an exchange-coupled multilayer system composed of two different ferromagnetic (FM) materials. We specifically consider a system in which the…

材料科学 · 物理学 2024-04-12 Vittorio Basso , Carlo P. Sasso , Martino LoBue , Karl G. Sandeman

The exchange effect and the magneto-plasmon mode dispersion are studied theoretically for an anisotropic two-dimensional electronic system in the presence of an uniform perpendicular magnetic field. Employing an effective low-energy model…

介观与纳米尺度物理 · 物理学 2016-11-23 Xiaoguang Wu

Electrical gate-manipulated exchange bias (EB) effect is a long-term goal for spintronics applications. Meanwhile, the emergence of van der Waals (vdW) magnetic heterostructures provides ideal platforms for the study of interlayer magnetic…

Transport signatures of exchange gap opening because of magnetic proximity effect (MPE) are reported for bilayer structures of Bi2Se3 thin films on yttrium iron garnet (YIG) and thulium iron garnet (TmIG) of perpendicular magnetic…

应用物理 · 物理学 2019-07-31 S. R. Yang , Y. T. Fanchiang , C. C. Chen , C. C. Tseng , Y. C. Liu , M. X. Guo , M. Hong , S. F. Lee , J. Kwo

We address the electronically induced anisotropy field acting on a spin moment comprised in a vibrating magnetic molecule located in the junction between ferromagnetic metals. Under weak coupling between the electrons and molecular…

介观与纳米尺度物理 · 物理学 2018-06-20 J. D. Vasquez Jaramillo , H. Hammar , J. Fransson

In this paper I report, exchange bias effect in a bilayer thin film of amorphous zinc ferrite and nanocrystalline gallium ferrite. The amorphous zinc ferrite layer was deposited at room temperature (Ts = RT) on top of a nanocrystalline…

材料科学 · 物理学 2019-11-18 Himadri Roy Dakua

Magnetic and magneto-transport properties of manganese nitride films grown by molecular beam epitaxy have been investigated. Due to the mixed ferrimagnetic (FI) phase (${\epsilon}$-phase with TFI ~ 738 K) and the antiferromagnetic phase…

材料科学 · 物理学 2018-04-18 Meng Meng , Shuwei Li , Mohammad Saghayezhian , E. W. Plummer , Rongying Jin

Magnetic anisotropy is a key parameter to describe the exchange bias effect in heterostructures. In this paper, we describe explicit density functional calculations of the magnetic structure of an interface between the industrially…

材料科学 · 物理学 2025-09-03 Robert A. Lawrence , Matt I. J. Probert

The electric field effect on magnetic anisotropy was studied in an ultrathin Fe(001) monocrystalline layer sandwiched between Cr buffer and MgO tunnel barrier layers, mainly through post-annealing temperature and measurement temperature…

We have studied the barocaloric effect (BCE) in the geometrically frustrated antiferromagnet Mn$_{3}$NiN across the N\'{e}el transition temperature. Experimentally we find a larger barocaloric entropy change by a factor of 1.6 than that…

Igniting interface magnetic ordering of magnetic topological insulators by building a van der Waals heterostructure can help to reveal novel quantum states and design functional devices. Here, we observe an interesting exchange bias effect,…

The Bose-Einstein condensation of bound pairs made of oppositely charged fermions in a magnetic field is investigated. We find that the condensation temperature shows the magnetic catalysis effect in weak coupling and the inverse magnetic…

量子气体 · 物理学 2015-12-31 Bo Feng , Defu Hou , Hai-cang Ren

Magnetic Weyl semimetals, which couple magnetic order with topological features, have emerged as promising candidates for advanced topological-materials-based applications. The switching of magnetization and the driving of domain wall…

材料科学 · 物理学 2024-10-30 Qing-Qi Zeng , Xi-Tong Xu , En-Ke Liu , Zhe Qu

Amorphous ferrimagnetic TbFeCo thin films are found to exhibit exchange bias effect near the compensation temperature by magnetic hysteresis loop measurement. The observed exchange anisotropy is believed to originate from the exchange…

介观与纳米尺度物理 · 物理学 2016-06-22 Chung T. Ma , Xiaopu Li , S. Joseph Poon

We propose an electric-field-controlled mechanism for magnetization switching assisted solely by the interlayer-exchange coupling (IEC) between the fixed and the free magnets, which are separated by two oxide barriers sandwiching a spacer…

介观与纳米尺度物理 · 物理学 2020-10-02 Shehrin Sayed , Cheng-Hsiang Hsu , Niklas Roschewsky , See-Hun Yang , Sayeef Salahuddin

Motivated by the recent suggestion of anisotropic effective exchange interactions between Mn spins in Ga$_{1-x}$Mn$_x$As (arising as a result of spin-orbit coupling), we study their effects in diluted Heisenberg spin systems. We perform…

无序系统与神经网络 · 物理学 2007-05-23 Chenggang Zhou , Malcolm P. Kennett , Xin Wan , Mona Berciu , R. N. Bhatt

The exchange-bias training effect in IrMn-layer/ferromagnetic-ribbon heterostructure is studied by performing magnetoimpedance (MI) measurements. Asymmetric, hysteretic and single peak behavior of the MI response and a shift in the MI peak…

介观与纳米尺度物理 · 物理学 2020-10-28 Mohammadreza Hajiali , Mohammad Javad Kamali Ashtiani , Loghman Jamilpanah , Majid Mohseni