Temperature dependence of planar Hall effect of Fe/MgO(001)

Slides:

Advertisements

Similar presentations

Imaging the Magnetic Spin Structure of Exchange Coupled Thin Films Ralf Röhlsberger Hamburger Synchrotronstrahlungslabor (HASYLAB) am Deutschen Elektronen.

Advertisements

GIANT MAGENTORESISCANCE AND MAGNETIC PROPERTIES OF ELECTRODEPOSITED Ni-Co-Cu/Cu MULTILAYERS.

Fundamentals of Magnetism T. Stobiecki. Definitions of magnetic fields Induction: External magnetic field: Magnetizationaverage magnetic moment of magnetic.

Make a sketch Problem: A 10.0 kg box is pulled along a horizontal surface by a rope that makes a 30.0 o angle with the horizontal. The tension in the rope.

Influence of Substrate Surface Orientation on the Structure of Ti Thin Films Grown on Al Single- Crystal Surfaces at Room Temperature Richard J. Smith.

Magneto Optical Kerr Effect (MOKE) Nano-meter scale magnetic particles constitute a rich and rapidly growing area in condensed matter physics, due.

The planar Hall effect: sensor and memory applications Lior Klein Department of Physics, Bar-Ilan University The Itinerant Magnetism Laboratory – Department.

AP Physics C Magnetic Fields and Forces. Currents Set up Magnetic Fields First Right-Hand Rule Hans Christian Oersted ( )

Topics in Magnetism III. Hysteresis and Domains

Magnetic sensors and logic gates Ling Zhou EE698A.

HEADS I T. Stobiecki Katedra Elektroniki AGH 4 wykład

Brillouin Light Scattering Studies of Magnetic Multilayers Cyrus Reed, Milton From Department of Physics and Astronomy, Western Washington University What.

Ion-beam Sputtering Deposition Vacuum System Thickness Monitor Substrate Heater (1000°C) Kaufman Ion Gun Multiple Target Holder Ar Cathode Anode Glow Discharge.

MRAM (Magnetic random access memory). Outline Motivation: introduction to MRAM. Switching of small magnetic structures: a highly nonlinear problem with.

Thermo-elastic properties characterization by photothermal microscopy J.Jumel,F.Taillade and F.Lepoutre Eur. Phys. J. AP 23, Journal Club Presentation.

Christian Stamm Stanford Synchrotron Radiation Laboratory Stanford Linear Accelerator Center I. Tudosa, H.-C. Siegmann, J. Stöhr (SLAC/SSRL) A. Vaterlaus.

Magnetoelastic Coupling and Domain Reconstruction in La 0.7 Sr 0.3 MnO 3 Thin Films Epitaxially Grown on SrTiO 3 D. A. Mota IFIMUP and IN-Institute of.

Magnetic Material Engineering. Chapter 6: Applications in Medical and Biology Magnetic Material Engineering.

STRUCTURE AND MAGNETIC PROPERTIES OF ULTRA-THIN MAGNETIC LAYERS

Characteristic MOKE Loops for S320 Strong signals up to 320 K (upper limit of the measurements) Nearly square loops at high temperatures Low saturation.

Andreas Scholl, 1 Marco Liberati, 2 Hendrik Ohldag, 3 Frithjof Nolting, 4 Joachim Stöhr 3 1 Lawrence Berkeley National Laboratory, Berkeley, CA 94720,

Jeffrey Camp Advisor: Dr. Cindi Dennis, NIST

The Story of Giant Magnetoresistance (GMR)

Coupling Single Molecule Magnets to Ferromagnetic Substrates.

Electric field manipulation of magnetization at room temperature in multiferroic CoFe 2 O 4 /Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 heterostructures J. J. Yang,

Electric Field Lines Contents: Basic Concept Field Lines and point charges Field Lines and conductors.

Effects of Arrays arrangements in nano-patterned thin film media

MOKE Results 137. Magnetic properties of CoMnGe ternary alloys Co Ge Mn Exhibits room.

By Abdullah Framalawi Aly Abouhaswa Polarized Neutron Spectrometry : Studying nanostructure magnetism with the use of polarized neutron reflectometry.

Controlled fabrication and optical properties of one-dimensional SiGe nanostructures Zilong Wu, Hui Lei, Zhenyang Zhong Introduction Controlled Si and.

Conclusion QDs embedded in micropillars are fabricated by MOCVD and FIB post milling processes with the final quality factor about Coupling of single.

Epitaxial films of tetragonal Mn 3 Ga: magnetism and microstructure F. Casoli 1,*, J. Karel 2, P. Lupo 3, L. Nasi 1, S. Fabbrici 1,4, L. Righi 1,5, F.

Some motivations Key challenge of electronic materials – to control both electronic and magnetic properties – to process the full electronic states Prospects.

Conclusion Room- temperature ferrimagnet with large magnetism P. S. Wang, H. J. Xiang* Key Laboratory of Computational Physical Sciences (Ministry of Education),

High-temperature ferromagnetism

Motivation Experimental method Results Conclusion References

Foundations of Magnetism

SUPERCONDUCTING THIN FILMS FOR SRF CAVITIES

P2-D125 Decrement of the Exchange Stiffness Constant of CoFeB thin films with Ar gas pressure. Jaehun Cho, Jinyong Jung, Ka-Eon Kim, Sukmock Lee Chun-Yeol.

The Magnetic Field.

rr Enhancement of magneto-optical Kerr effect signal

Macroscopic Dynamics of Ferromagnetic Nematics

Lecture 3 0f 8 Topic 5: VECTORS 5.3 Scalar Product.

Growth & Characterization

MAGNETIC MATERIALS. MAGNETIC MATERIALS – Introduction MAGNETIC MATERIALS.

Lecture 14 : Electromagnetic Waves

Annealing effects on photoluminescence spectra of

Anisotropic superconducting properties

conclusion Structure and magnetic properties of FexCo1-x films

Theories and recent studies: Experimental results:

Measurement of Single Macromolecule Orientation by Total Internal Reflection Fluorescence Polarization Microscopy Joseph N. Forkey, Margot E. Quinlan,

? Enhancement of light-matter interactions in slow-wave metasurfaces ?

Magnetic control of light-matter coupling for a single quantum dot embedded in a microcavity Qijun Ren1, Jian Lu1, H. H. Tan2, Shan Wu3, Liaoxin Sun1,

Magnetic transport properties in epitaxial Fe3O4 thin film

Motivation Oscillatory magnetic anisotropy originating from

Abstract Results Summary

Kai Zhu, Shunhao Xiao, Xiaofeng Jin

Michael E Wall, James B Clarage, George N Phillips Structure

High Sensitivity of Stark-Shift Voltage-Sensing Dyes by One- or Two-Photon Excitation Near the Red Spectral Edge Bernd Kuhn, Peter Fromherz, Winfried.

Weiyi Wang, Yanwen Liu, Cheng Zhang, Ping Ai, Faxian Xiu

Fig. 1 Sensing scheme with an atomic spin sensor.

2. SEM images of different SiNW structures 3.Results and discussion

Annual Academic Conference of Dept. Physics, Fudan University (2016)

P. He1,4, X. Ma2, J. W. Zhang4, H. B. Zhao2,3, G. Lupke2, Z

Fig. 3 Transport characterization of dry-assembled devices.

Temperature dependant transport behavior of Bismuth

Tailor the Angular Dispersion of Metasurfaces

Fig. 1 Structure and basic properties of EuTiO3 (ETO) films.

Snapshots of long-range perturbations in aqueous NaCl solutions

Presentation transcript:

Temperature dependence of planar Hall effect of Fe/MgO(001) Determination of the anisotropy field strength in magnetic films using magneto transport measurement W. N. Cao, J. Li, Y. Z. Wu Surface Physics Laboratory (National Key Laboratory), Department of Physics, Fudan University, Shanghai, China Motivation The method to determine the magnetic anisotropy of magnetic thin film quantitatively Hysteresis technique : need to saturate the magnetization (ROTMOKE) Anisotropic transport measurement: not necessary to saturate the magnetization Anisotropic magneto-resistance, Planar Hall effect External magnetic field<exchange coupling field No broken exchange coupling For studying the exchange coupling of magnetic multilayer Demo the setup of transport measurement(determine the magnetic anisotropy of single-crystal Fe film) Determine the magnetic anisotropy by ROTMOKE Sample preparation Angle dependence of torque curve of Fe/MgO(001) Sample Magnet Laser Polarizer Analyzer Photodiode MgO(3nm)/ Fe (10nm)/MgO(001) Grown epitaxially by MBE Sketch drawing of Hall bar The Hall bars were along the [100] and [110] direction. The planar Hall effect was measured with a current of 2.5mA along the Hall bar. fitting curves equation: l(α)=(1/2)Hk1 sin2θ+(1/4)Hk2 sin4θ l(α) is the ratio L/VMs(L is a torque, V the volume of the magnetic layer, Ms the saturation magnetization), Hk1 the uniaxial anisotropy,Hk2 the four-fold anisotropy. Hk1=35±5 Oe; Hk2= 570±9 Oe Planar Hall Effect (PHE) Determination of the magnetic anisotropy by PHE θM M I l(α)=Hsin(α-θ) black dots and green dots Vxy l(α)=(1/2)Hk1 sin2θ+(1/4)Hk2 sin4θ red fitting curves Hall bar along [110]， H=1000 Oe Hall bar along [100]， H=1000 Oe ρxy=Vxy/I·d= (ρ// − ρ⊥)cos θM sin θM ρ// and ρ⊥ are resistivities for magnetization vector oriented parallel and perpendicular to the current. ρ// − ρ⊥ Angle-dependence of Planar Hall effect Hk1=39±5 Oe, Hk2= 577±9 Oe Hk1=49±3 Oe, Hk2= 554±6 Oe Same as results from ROTMOKE except for better signal to noise ratio ! Conclusion Temperature dependence of planar Hall effect of Fe/MgO(001) Home-made setup for Planar Hall Effect measurement was finished. Magnetic anisotropy of Fe/MgO(001) was determined by ROTMOKE and Planar Hall Effect. The results from these two methods are same but better signal to noise ratio can be obtained by Planar Hall Effect. Linear dependence of Planar Hall Effect on temperature was found from 90K to room temperature. Planar Hall Effect of Fe/MgO is linearly dependent on temperature .