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We report the structural, magnetic, and interfacial spin transport properties of epitaxial terbium iron garnet (TbIG) ultrathin films deposited by magnetron sputtering. High crystallinity was achieved by growing the films on gadolinium…

Materials Science · Physics 2023-02-22 Silvia Damerio , Can Onur Avci

The structural crystal features, electron transport and magnetotransport of the epitaxial strontium iridate (SrIrO$_3$) and iridate/manganite SrIrO$_3$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure have been investigated. The influence of…

We have grown thin films of the Heusler compound Co_2FeSi by RF magnetron sputtering. On (100)-oriented MgO substrates we find fully epitaxial (100)-oriented and L2_1 ordered growth. On Al_2O_3 (11-20) substrates, the film growth is…

The phonon dispersion was measured at room temperature along (0,0,L) in the tetragonal phase of LaFeAsO using inelastic x-ray scattering. Spin-polarized first-principles calculations imposing various types of antiferromagnetic order are in…

For magnonics and spintronics applications, the spin polarization ($P$) of a transport current and the magnetic damping ($\alpha$) play a crucial role, e.g. for magnetization dynamics and magnetization switching applications. In particular,…

This work demonstrated two different kinds of magneto-transport behaviors in epitaxial $L1_{0}$ MnAl film as a function of temperature. The magneto-resistance ratio (MR) was negative and exhibited evident enhancement in the resistivity at…

Mesoscale and Nanoscale Physics · Physics 2016-10-26 Linqiang Luo , Nattawut Anuniwat , Nam Dao , Yishen Cui , Stuart A. Wolf , Jiwei Lu

The electron spin polarization on half-metallic double-perovskites is usually conditioned to the ordered rock-salt arrangement of the transition-metal ions along the lattice. In this work, we investigate a polycrystalline sample of the…

While in most ferro or antiferromagnetic materials there is a unique crystallographic direction, including crystallographically equivalent directions, in which the moments like to point due to spin-orbit coupling, in some, the direction of…

Materials Science · Physics 2019-12-25 Neeraj Kumar , Y. Soh , Yihao Wang , Y. Xiong

We report magnon spin transport in nickel ferrite (NiFe$_2$O$_4$, NFO)/ platinum (Pt) bilayer systems at room temperature. A nonlocal geometry is employed, where the magnons are excited by the spin Hall effect or by the Joule heating…

Materials Science · Physics 2017-04-14 J. Shan , P. Bougiatioti , L. Liang , G. Reiss , T. Kuschel , B. J. van Wees

Transport properties of an epitaxial film of La_0.7Sr_0.3MnO_3 (LSMO), deposited epitaxially on a LaAlO_3 bi-crystal substrate having a misorientation angle of 9.2 deg., have been studied. The film was patterned into a meander containing…

Materials Science · Physics 2016-08-31 R. Mathieu , P. Svedlindh , R. Chakalov , Z. G. Ivanov

Nd$_{2-x}$Ce$_x$CuO$_{4\pm\delta}$ (NCCO) epitaxial thin films have been deposited on (100) SrTiO$_3$ substrates by DC sputtering technique in different atmosphere. The as-grown samples show different dependence of the in-plane resistivity…

We utilize spin Hall magnetoresistance (SMR) measurements to experimentally investigate the pure spin current transport and magnetic properties of nickel ferrite (NiFe2O4,NFO)/normal metal (NM) thin film heterostructures. We use…

Mesoscale and Nanoscale Physics · Physics 2019-10-02 Matthias Althammer , Amit Vikam Singh , Tobias Wimmer , Zbigniew Galazka , Hans Huebl , Matthias Opel , Rudolf Gross , Arunava Gupta

The Point Contact Andreev Reflection (PCAR) technique has already been used to measure the spin polarization of some of the dilute magnetic semiconductors, such as narrow-band (In,Mn)Sb, as well as wider gap (Ga,Mn)As. While in (In,Mn)Sb…

Superconductivity · Physics 2009-11-13 Raghava P. Panguluri , B. Nadgorny , T. Wojtowicz , X. Liu , J. K. Furdyna

The temperature dependence of the electrical resistivity and magnetoresistance of Xe-ion beam sputtered Fe-Cr multilayers has been investigated. The electrical resistivity between 5 and 300 K in the fully ferromagnetic state, obtained by…

Materials Science · Physics 2009-11-07 A. K. Majumdar , A. F. Hebard , Avinash Singh , D. Temple

Highly oriented polycrystalline SSMO thin films deposited on single crystal substrates by ultrasonic nebulized spray pyrolysis have been studied. The film on LAO is under compressive strain while LSAT and STO are under tensile strain. The…

Strongly Correlated Electrons · Physics 2013-05-20 Manoj K. Srivastava , Sandeep Singh , P. K. Siwach , Amarjeet Kaur , V. P. S. Awana , K. K. Maurya , H. K. Singh

Simultaneous studies on the magnetic and electrotransport properties of Nd_{0.67} Sr_{0.33} Mn_{1-x} Fe_x O_3 polycrystalline bulk and epitaxial thin films (x = 0.00 and 0.05) have been carried out. A magnetoresistance (MR) as high as ~ 33%…

Materials Science · Physics 2007-05-23 Chang Yoke Ling , C. K. Ong

We have experimentally and theoretically investigated the electron spin transport and spin distribution at room temperature in a Si two-dimensional (2D) inversion channel of back-gate-type spin metal-oxide-semiconductor field-effect…

Applied Physics · Physics 2020-07-22 Shoichi Sato , Masaaki Tanaka , Ryosho Nakane

We report the deposition of thin Co$_2$FeSi films by RF magnetron sputtering. Epitaxial (100)-oriented and L2$_1$ ordered growth is observed for films grown on MgO(100) substrates. (110)-oriented films on Al$_2$O$_3$(110) show several…

Materials Science · Physics 2007-05-23 H. Schneider , Ch. Herbort , G. Jakob , H. Adrian , S. Wurmehl , C. Felser

Thin films of magnetite (Fe3O4) are grown on single crystal GaAs (100) substrate by pulsed laser deposition. X ray diffraction (XRD) result shows the (111) preferred orientation of the Fe3O4 film and x-ray photoelectron spectroscopy confirm…

Materials Science · Physics 2009-12-08 Ram Prakash , R. J. Choudhary , L. S. Sharath Chandra , N. Lakshmi , D. M. Phase

Spin gapless semiconductors are interesting novel class of materials by embracing both magnetism and semiconducting. Its potential application in future spintronics requires realization in thin film form. In this letter, we report a…

Materials Science · Physics 2019-08-17 G. Z. Xu , Y. Du , X. M. Zhang , H. G. Zhang , E. K. Liu , W. H. Wang , G. H. Wu