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Amorphous TbFeCo thin films sputter deposited at room temperature on thermally oxidized Si substrate are found to exhibit strong perpendicular magnetic anisotropy (PMA). Atom probe tomography (APT), scanning transmission electron microscopy…

材料科学 · 物理学 2016-01-20 Xiaopu Li , Chung T. Ma , Jiwei Lu , Arun Devaraj , Steven R. Spurgeon , Ryan B. Comes , S. Joseph Poon

Temperature dependent transport measurements on ultrathin antiferromagnetic Mn films reveal a heretofore unknown non-universal weak localization correction to the conductivity which extends to disorder strengths greater than 100 k$\Omega$…

介观与纳米尺度物理 · 物理学 2015-08-10 S. Buvaev , S. Ghosh , K. Muttalib , P. Wölfle , A. Hebard

We report on a monotonic reduction of Curie temperature in dilute ferromagnetic semiconductor (Ga,Mn)As upon a well controlled chemical-etching/oxidizing thinning from 15 nm down to complete removal of the ferro- magnetic response. The…

材料科学 · 物理学 2012-06-29 O. Proselkov , D. Sztenkiel , W. Stefanowicz , M. Aleszkiewicz , J. Sadowski , T. Dietl , M. Sawicki

We describe measurements of the uniaxial magnetic anisotropy and spin-flop rotation of the N\'eel vector in antiferromagnetic CuMnAs thin films using neutron diffraction. The suppression of the magnetic (100) peak under magnetic fields is…

For applying tensile or compressive uniaxial strain to functional thin films, we propose a novel approach in combining a piezoelectric-based device and a technical metallic substrate used widely in the 2nd generation coated conductors (i.e.…

We report switching of magnetic anisotropy (MA) from in-plane to perpendicular with increasing the thickness d of a (001)-oriented ferromagnetic-semiconductor (FMS) (Ga0.7,Fe0.3)Sb layer with a high Curie temperature (Tc > 320 K), using…

材料科学 · 物理学 2019-08-28 Shobhit Goel , Le Duc Anh , Nguyen Thanh Tu , Shinobu Ohya , Masaaki Tanaka

We report the reduction in residual stress of AlN thin films and also the crystal structure, surface morphology and nanomechanical properties of magnetron sputtered as a function of substrate temperature (Ts, 35 - 600 ?C). The residual…

材料科学 · 物理学 2017-07-25 Padmalochan Panda , R. Ramaseshan , N Ravi , G. Mangamma , Feby Jose , S. Dash , K. Suzuki , H. Suematsu

The antiferromagnetic to ferromagnetic transition occurring above room temperature in FeRh is attracting interest for applications in spintronics, with perspectives for robust and untraceable data storage. Here, we show that FeRh films can…

Antiferromagnetic materials are promising platforms for the development of ultra-fast spintronics and magnonics due to their robust magnetism, high-frequency relativistic dynamics, low-loss transport, and the ability to support topological…

Ferromagnetic properties of In1-xMnxAs thin films were investigated. Room temperature ferromagnetic order was observed in nominally single-phase films with x = 0.01-0.10. Magnetization measurements indicated that these In1-xMnxAs samples…

材料科学 · 物理学 2009-11-10 A. J. Blattner , B. W. Wessels

The recent demonstration of MoSi2N4 and its exceptional stability to air, water, acid, and heat has generated intense interest in this family of two-dimensional (2D) materials. Among these materials, NbSi2N4, VSi2N4, and VSi2P4 are…

材料科学 · 物理学 2021-08-25 Md. Rakibul Karim Akanda , Roger K Lake

The transport and magnetic properties in ferromagnetic manganese-oxide thin films are studied based on the model of the coupling between the mobile d-electrons and the core spins in Mn ions. The spontaneous magnetization and the resistivity…

凝聚态物理 · 物理学 2019-08-15 Liang-Jian Zou , X. G. Gong , Qing-Qi Zheng , C. Y. Pan

In this work we present a study of the low temperature magnetic phases of polycrystalline MnCr$_2$O$_4$ spinel through dc magnetization and ferromagnetic resonance spectroscopy (FMR). Through these experiments we determined the main…

材料科学 · 物理学 2014-12-03 Dina Tobia , Julián Milano , María Teresa Causa , Elin L. Winkler

50nm thick nanogranular polycrystalline dysprosium thin films have been prepared via ultra-high vacuum DC sputtering on SiO2 and Si wafers. The maximum in-plane spontaneous magnetization at T = 4K was found to be MS4K = 3.28T for samples…

材料科学 · 物理学 2015-06-12 G. Scheunert , W. R. Hendren , A. A. Lapicki , R. Hardeman , M. Gubbins , R. M. Bowman

We report on the perpendicular magnetic anisotropy (PMA) behavior of heavy metal (HM)/ Fe alloy/MgO thin film heterostructures after an ultrathin HfO2 passivation layer is inserted between the Fe alloy and the MgO. This is accomplished by…

材料科学 · 物理学 2017-05-10 Yongxi Ou , D. C. Ralph , R. A. Buhrman

Perovskite oxides display correlated electrical, magnetic, and thermal properties that can be further tuned in the thin-film limit, making them contenders for next-generation electronics. Measuring thermal transport in thin films is…

We present experimental control of the magnetic anisotropy in a gadolinium iron garnet (GdIG) thin film from in-plane to perpendicular anisotropy by simply changing the sample temperature. The magnetic hysteresis loops obtained by SQUID…

材料科学 · 物理学 2017-06-27 H. Maier-Flaig , S. Geprägs , Z. Qiu , E. Saitoh , R. Gross , M. Weiler , H. Huebl , S. T. B. Goennenwein

We report the evolution of magnetic moment as well as magnetic anisotropy with crystalline order in Co$_2$MnSi thin films grown on $(100)$ MgO by pulsed laser deposition. The films become more ordered as the annealing temperature ($T_A$)…

材料科学 · 物理学 2013-05-31 Himanshu Pandey , P. C. Joshi , R. P. Pant , R. Prasad , S. Auluck , R. C. Budhani

We investigated perpendicular magnetic anisotropy (PMA) and related properties of epitaxial Fe (0.7 nm)/MgAl2O4(001) heterostructures prepared by electron-beam evaporation. Using an optimized structure, we obtained a large PMA energy ~1…

材料科学 · 物理学 2018-06-04 Qingyi Xiang , Ruma Mandal , Hiroaki Sukegawa , Yukiko K. Takahashi , Seiji Mitani

To stabilize the non-trivial spin textures, e.g., skyrmions or chiral domain walls in ultrathin magnetic films, an additional degree of freedom such as the interfacial Dzyaloshinskii-Moriya interaction (IDMI) must be induced by the strong…