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Multilayers of Co90Fe10/Pd with different bilayer thicknesses, have been deposited by dc-magnetron sputtering on thermally oxidized Si wafers. Transmission electron microscopy showed that the highly textured crystalline films had columnar…

Materials Science · Physics 2015-06-23 Desai Zhang , Justin M. Shaw , David J. Smith , Martha R. McCartney

We report point-contact measurements of anisotropic magnetoresistance (AMR) in a single crystal of antiferromagnetic (AFM) Mott insulator Sr2IrO4. The point-contact technique is used here as a local probe of magnetotransport properties on…

Mesoscale and Nanoscale Physics · Physics 2014-12-03 Cheng Wang , Heidi Seinige , Gang Cao , Jian-Shi Zhou , John B. Goodenough , Maxim Tsoi

Magnetoresistance loops under in-plane applied field were measured on perpendicularly magnetized magnetic tunnel junction (pMTJ) pillars with nominal diameters ranging from 50 to 150 nm. By fitting the hard-axis magnetoresistance loops to…

Mesoscale and Nanoscale Physics · Physics 2016-02-19 A. A. Timopheev , R. Sousa , M. Chshiev , T. Nguyen , B. Dieny

Voltage control of magnetic anisotropy (VCMA) in magnetic heterostructures is a key technology for achieving energy-efficiency electronic devices with ultralow power consumption. Here, we report the first demonstration of the VCMA effect in…

Materials Science · Physics 2017-03-24 Zhenchao Wen , Hiroaki Sukegawa , Takeshi Seki , Takahide Kubota , Koki Takanashi , Seiji Mitani

Magnetization reversal of soft ferromagnetic Fe layer, coupled to [Co/Pt]ML multilayer [ML] with perpendicular magnetic anisotropy (PMA), has been studied in-situ with an aim to understand the origin of exchange bias (EB) in orthogonal…

The perpendicular magnetic anisotropy at the Co/oxide interface in Pt/Co/MOx (MOx = MgOx, AlOx, TbOx) was modified by an electric field using a 10 nm-thick ZrO2 as a solid electrolyte. The large voltage-driven modification of interfacial…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Aymen Fassatoui , Jose Pena Garcia , Jan Vogel , Laurent Ranno , Anne Bernand-Mantel , Hélène Béa , Sergio Pizzini , Stefania Pizzini

We report the fabrication of perpendicular ferromagnetic electrodes for tunneling devices consist of van der Waals heterostructure. We found MgO/Co/Pt films on Hexagonal BN shows perpendicular magnetic anisotropy (PMA) with the easy axis…

Mesoscale and Nanoscale Physics · Physics 2017-10-31 H. Idzuchi , T. Taniguchi , K. Watanabe , P. Kim

Interfacial Dzyaloshinskii-Moriya interaction (iDMI) has been investigated in Co2FeAl (CFA) ultrathin films of various thicknesses (0.8 nm<tCFA<2 nm) grown on Si substrates, using Pt, W, Ir and MgO buffer or/and capping layers. Vibrating…

We investigated the origin of perpendicular magneto-crystalline anisotropy (MCA) in L10 ordered FeNi alloy using first-principles density-functional calculations. We found that the perpendicular MCA of L10-FeNi arises predominantly from the…

Materials Science · Physics 2015-06-11 Yoshio Miura , Sho Ozaki , Yasushi Kuwahara , Masahito Tsujikawa , Kazutaka Abe , Masafumi Shirai

In intercalated transition metal dichalcogenide $Fe_xTaS_2$ (0.2 $\leq$ x $\leq$ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of…

Strongly Correlated Electrons · Physics 2017-05-10 G. Wu , B. L. Kang , Y. L. Li , T. Wu , N. Z. Wang , X. G. Luo , Z. Sun , L. J. Zou , X. H. Chen

Recent results show remarkable interfacial--Dzyaloshinskii--Moriya interaction (i-DMI) in magnetic heterostructures composed of relatively thick Fe thin films ($\gg 1$ nm). To investigate its origin, we present a thorough magnetic…

We have investigated crystalline magnetic anisotropy in the electric field (EF) for the Fe-Pt surface which have a large perpendicular anisotropy, by means of the first-principles approach. The anisotropy is reduced linearly with respect to…

Materials Science · Physics 2015-05-13 Masahito Tsujikawa , Tatsuki Oda

We have fabricated oxide based spin filter junctions in which we demonstrate that magnetic anisotropy can be used to tune the transport behavior of spin filter junctions. Until recently, spin filters have been largely comprised of…

Materials Science · Physics 2015-05-27 R. V. Chopdekar , B. B. Nelson-Cheeseman , M. Liberati , E. Arenholz , Y. Suzuki

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…

Materials Science · Physics 2019-08-28 Shobhit Goel , Le Duc Anh , Nguyen Thanh Tu , Shinobu Ohya , Masaaki Tanaka

In the present work, interfacial magnetism at metal organic interface is probed using an isotope sensitive interface resolved nuclear resonance scattering technique which is made depth selective under x-rays standing wave conditions. Using…

Materials Science · Physics 2024-05-03 Avinash G Khanderao , V R Reddy , Ilya Sergueev , Dileep Kumar

The application of gate voltages in heavy metal/ferromagnet/Oxide multilayer stacks has been identified as one possible candidate to manipulate their anisotropy at will. However, this method has proven to show a wide variety of behaviours…

Mesoscale and Nanoscale Physics · Physics 2023-05-24 Adriano Di Pietro , Rohit Pachat , Liza Herrera Diez , Johannes W. van der Jagt , Dafiné Ravelosona , Gianfranco Durin

In the present work, spin orientation and variation of the strength of coupling in [Co/Pt]ML/Fe multilayer have been investigated as a function of the thickness of the Fe layer. [Co/Pt]ML/Fe multilayer has orthogonal anisotropy with the Fe…

We report the compositional and temperature dependence of magnetic compensation in amorphous GdFeCo films. Magnetic compensation is attributed to the competition between antiferromagnetic coupling of rare-earth with transition-metal (TM)…

Materials Science · Physics 2015-06-16 Manli Ding , S. Joseph Poon

A novel approach to tune the ferromagnetic resonance frequency of a soft magnetic Ni$_{80}$Fe$_{20}$ (Permalloy = Py) film with in-plane magnetic anisotropy (IMA) based on the controlled coupling to a hard magnetic NdCo$_\text{x}$ film with…

The authors demonstrated that L21-ordered full-Heusler Co2FeSi (CFS) alloy film with thickness of 100 nm were formed by facing targets sputtering (FTS) method at a substrate temperature TS = 300 deg C. Degrees of L21- and B2- order for the…

Materials Science · Physics 2017-12-15 Yota Takamura , Takahiro Suzuki , Yorinobu Fujino , Shigeki Nakagawa
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