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Magnetic textures in the ferromagnetic phases of La$_{1-x}$Sr$_x$MnO$_3$ for 0.15 $< x <$ 0.30 have been investigated by Lorentz microscopy combined with small-angle electron diffraction experiments. Various types of magnetic textures…

Strongly Correlated Electrons · Physics 2020-05-05 A. Kotani , H. Nakajima , K. Harada , Y. Ishii , S. Mori

Magnetotransport measurements were done on $\Nb/\Al_2\O_3/\Cu/\Ni/\Nb$ superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions. Depending on ferromagnetic $\Ni$ interlayer thickness and geometry the standard (1d)…

Superconductivity · Physics 2008-08-06 M. Weides

Rare earth/transition metal (RE/TM) multilayers with perpendicular magnetic anisotropy are key ingredients for the development of spintronic applications. Their compensation temperature depends on the ratio of the thicknesses of rare earth…

NdFeAs(O,F) thin films having different fluorine contents were grown on 5 deg. or 10 deg. vicinal cut MgO and CaF2 single crystalline substrates by molecular beam epitaxy. Structural characterisations by reflection high-energy electron…

Superconductivity · Physics 2020-03-23 Kazumasa Iida , Takuya Matsumoto , Keisuke Kondo , Takafumi Hatano , Hiroshi Ikuta

We have studied the magnetic torque in uranium monosulfide (US) single crystals to explore the magnetic anisotropy in this material. Uranium monosulfide crystallizes in cubic, NaCl-type of crystal structure and exhibits the largest…

Strongly Correlated Electrons · Physics 2021-07-28 Narayan Poudel , Jason Jeffries , Krzysztof Gofryk

Multifunctional materials composed of ultrathin magnetic films with perpendicular magnetic anisotropy combined with ferroelectric substrates represent a new approach toward low power, fast, high density spintronics. Here we demonstrate…

Mesoscale and Nanoscale Physics · Physics 2016-01-08 Daniel B. Gopman , Cindi L. Dennis , Andrew P. Chen , Yury L. Iunin , Peter Finkel , Margo Staruch , Robert D. Shull

We demonstrate the physical principles for the construction of a nanometer sized magnetoresistance device based on the Aharonov-Bohm effect. The proposed device is made of a short single-walled carbon nanotube (SWCNT) placed on a substrate…

Materials Science · Physics 2009-11-10 Oded Hod , Eran Rabani , Roi Baer

The temperature and angle dependent resistivity of Ba(Fe$_{0.75}$Ru$_{0.25}$)$_2$As$_2$ single crystals were measured in magnetic fields up to 14 T. The temperature dependent resistivity with the magnetic field aligned parallel to c-axis…

Superconductivity · Physics 2012-12-27 Jie Xing , Bing Shen , Bin Zeng , Jianzhong Liu , Xiaxin Ding , Zhihe Wang , Huan Yang , Hai-Hu Wen

Bulk metallic samples were synthesized from different binary powder mixtures consisting of elemental Cu, Co, and Fe using severe plastic deformation. Small particles of the ferromagnetic phase originate in the conductive Cu phase, either by…

The magnetoresistance in a series of Ga1-xMnxAs samples with 0.2 =< x =< 0.8 have been measured for three mutually orthogonal orientations of the external magnetic field. The anisotropy magnetoresistance decreases with increasing of the Mn…

The two-dimensional electron system in (110)Al$_2$O$_{3-\delta}$/SrTiO$_3$ heterostructures displays anisotropic electronic transport. Largest and lowest conductivity and electron mobility $\mu$ are observed along the $[001]$ and…

Strongly Correlated Electrons · Physics 2018-09-19 K. Wolff , R. Eder , R. Schäfer , R. Schneider , D. Fuchs

We have investigated the anisotropic magnetoresistance (AMR) of (In,Fe)As ferromagnetic semiconductor (FMS) layers grown on semi-insulating GaAs substrates. In a 10 nm-thick (In,Fe)As layer which is insulating at low temperature, we…

Materials Science · Physics 2012-09-04 Pham Nam Hai , Daisuke Sasaki , Le Duc Anh , Masaaki Tanaka

We investigate the magnetic and magnetotransport properties of nanostructured Nd0.6Sr0.4MnO3 (NSMO) thin films grown on (100) oriented SrTiO3 (STO) substrates. The thin films fabricated using the pulsed laser deposition technique have been…

We report the in-plane anisotropy of the Seebeck and Nernst coefficients as well as of the electrical resistivity determined for the series of the strain-detwinned single crystals of Ba(Fe1-xCox)2As2. Two underdoped samples (x = 0.024,…

Superconductivity · Physics 2018-06-06 Marcin Matusiak , Krzysztof Rogacki , Thomas Wolf

Recent measurements of the magnetoimpedance (at a fixed frequency of 1 MHz) of cobalt-rich wires subjected to torsion stress show an asymmetry as a function of torsion angle stemming from residual anisotropies induced during wire…

Materials Science · Physics 2007-05-23 C. Tannous , J. Gieraltowski , R. Valenzuela

The magnetization of Zn1-xCoxO (0.0055 < x < 0.073) nanoparticles has been measured as a function of temperature T (1.7 K < T , 10 K) and for magnetic field up to 65 kOe using a SQUID magnetometer. Samples were synthesized by three…

Materials Science · Physics 2022-05-13 X. Gratens , B. de Abreu Silva , M. I. B. Bernardi , H. B. de Carvalho , A. Franco , V. A. Chitta

A set of thin film Mn$_x$Si$_{1-x}$ alloy samples with different manganese concentration x = 0.44 - 0.63 grown by the pulsed laser deposition (PLD) method onto the Al$_2$O$_3$(0001) substrate was investigated in the temperature range 4 -…

Co2MnSi (CMS) films of different thicknesses (20, 50 and 100 nm) were grown by radio frequency (RF) sputtering on a-plane sapphire substrates. Our X-rays diffraction study shows that, in all the samples, the cubic <110> CSM axis is normal…

We study the tunnel magnetoresistance (TMR) effect and magnetocrystalline anisotropy in a series of magnetic tunnel junctions (MTJs) with $L1_1$-ordered fcc ferromagnetic alloys and MgO barrier along the [111] direction. Considering the…

Materials Science · Physics 2021-02-24 Keisuke Masuda , Hiroyoshi Itoh , Yoshiaki Sonobe , Hiroaki Sukegawa , Seiji Mitani , Yoshio Miura

Here, we report wafer scale fabrication of densely packed Fe nanostripe-based magnetic thin films on a flexible substrate and their magnetic anisotropy properties. We find that Fe nanostripes exhibit large in-plane uniaxial anisotropy and…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Rukshan M. Thantirige , Jacob John , Nihar R. Pradhan , Kenneth R. Carter , Mark T. Tuominen