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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…

Mesoscale and Nanoscale Physics · Physics 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$^{-2}$),…

Condensed Matter · Physics 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…

Solar and Stellar Astrophysics · Physics 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…

Materials Science · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Applied Physics · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Materials Science · Physics 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…

Materials Science · Physics 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…

Materials Science · Physics 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…

Quantum Gases · Physics 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…

Materials Science · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Disordered Systems and Neural Networks · Physics 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…

Mesoscale and Nanoscale Physics · Physics 2020-10-28 Mohammadreza Hajiali , Mohammad Javad Kamali Ashtiani , Loghman Jamilpanah , Majid Mohseni