MgO-based magnetic tunnel junctions
Superparamagnetism in MgO based magnetic tunnel junctions with a thin pinned ferromagnetic electrode
... 兲 MgO-based magnetic tunnel junctions have been fabricated with a thin Co 40 Fe 40 B 20 共 CoFeB 兲 layer in the pinned synthetic antiferromagnetic CoFe/Ru/CoFeB ...the magnetic ...
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MgO based magnetic tunnel junctions and their applications
... the magnetic alignment o f the ...the magnetic alignment (see Table ...nonmagnetic tunnel junctions [17]. The way the electrons tunnel through the barrier depending on the layer ...
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Bias voltage dependence of inverted magnetoresistance on the annealing temperature in MgO based magnetic tunnel junctions
... for MgO to get high TMR in MgO-based MTJs, an amorphous CoFeB alloy is a good choice to achieve ...crystal MgO, a thin CoFeB layer on Ru is selected, which also can realize sign reversal of ...
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Evidence for boron diffusion into sub-stoichiometric MgO (001) barriers in CoFeB/MgO-based magnetic tunnel junctions
... þ MgO bilayer: B 1s, Mg 2p, and O 1s spectral ...etching. MgO (at 50 eV) and boron oxide (at 192 eV) are detected in just the barrier layer, metallic boron (187 eV) is detected throughout the entire ...
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Annealing effect on tunneling magnetoresistance in MgO based magnetic tunnel junctions with FeMn exchange bias layer
... A sign reversal of the TMR effect in MgO-based FeMn- MTJs, changing from inverted to normal, has been studied as a function of the annealing temperature. The inverted TMR effect is due to the imbalance of ...
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Spin transfer torque magnetisation switching in MgO based magnetic tunnel junctions
... In this thesis, first, the fundamentals of MTJs were explored by investigating different tunnel barrier materials, then, a new physical phenomenon called spin transfer torque magnetisati[r] ...
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Conductance enhancement due to interface magnons in electron beam evaporated MgO magnetic tunnel junctions with CoFeB free layer deposited at different pressure
... evaporated MgO-based magnetic tunnel junctions have been fabricated with the CoFeB free layer deposited at Ar pressure from 1 to 4 mTorr, and their tunneling process has been studied as ...
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A Two-Band Tight-Binding Model of Spin-Polarized Transport in Magnetic Tunnel Junctions
... in magnetic tunnel junctions [9-11] revealed the details of TMR and GMR mechanisms in ballistic ...for MgO-based magnetic tunnel junctions was investigated in ...
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Low frequency noise peak near magnon emission energy in magnetic tunnel junctions
... FIG. 2. Noise PSD in the P state for a MgO-based MTJ at di ff erent bias voltage values around the magnon peak at 3.6 K (a) and 0.6 K (c), the noise plateau is visible. The dashed lines in (a) and (c) are ...
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Tunneling processes in asymmetric double barrier magnetic tunnel junctions with a thin top MgO layer
... For MgO-based SBMTJs, the zero-bias anomaly (ZBA), magnon (M), and phonon (Ph) peaks are usually located at V 15 mV, V ¼ 20–35 mV, and V 81 mV, ...be magnetic impurities, interface magnons, and ...
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Realization of CoFeB|MgO|CoFeB magnetic tunnel junction devices through materials analysis, process integration and circuit simulation
... Spin based magnetic tunnel junctions (MTJs) consist of two ferromagnetic thin films separated by a non- magnetic insulating ...in MgO- based MTJs has brought spintronics ...
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Computational design of usual magnetic tunnel junctions
... Fe|MgO|Fe tunnel junction has revolutionized the hard-disk industries, yet despite its success it remains the only commercially viable tunnel ...a tunnel junction could make the next ...
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Search for alternative magnetic tunnel junctions based on all Heusler stacks
... large tunnel magneto-resistance (TMR) have undoubtedly revolutionized the electronics in- dustry and now form the central component of many tech- nologies, the most successful device being the read heads in ...
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Field sensing in MgO double barrier magnetic tunnel junctions with a superparamagnetic Co50Fe50 free layer
... Magnetic tunnel junctions (MTJs) with crystalline MgO barriers have been extensively studied due to their high tun- neling magnetoresistance (TMR) and potential for applica- tions in spin ...
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Resonant electronic states and I V curves of Fe/MgO/Fe(100) tunnel junctions
... Modern magnetic sensors, such as read heads for hard disk drives, are based on the tunnel magnetoresistance 共TMR兲 ...a magnetic tunnel junction 共MTJ兲 formed by two magnetic ...
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Yoke shaped MgO barrier magnetic tunnel junction sensors
... sensors based on MgO-barrier magnetic tunnel junctions have been designed, fabricated, and studied; they show a good linear tunneling magnetoresistance (TMR) ...low magnetic 1/f ...
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Annealing of CoFeB/MgO based single and double barrier magnetic tunnel junctions: Tunnel magnetoresistance, bias dependence, and output voltage
... two magnetic elec- trodes, spin accumulation effects, or magnon excitation at the metal/barrier ...two tunnel junctions connected in ...two junctions and the bias on each is ...Although ...
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The effect of magnetic annealing on barrier asymmetry in Co40Fe40B20/MgO magnetic tunnel junctions
... course, the results should be interpreted only as an indication of the effect of the asymmetry of potential barrier on asymmetry of the TMR versus bias voltage in our MgO-based MTJs. The changing of the ...
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Spin polarized tunneling in hybrid magnetic tunnel junctions comprising C60
... 2000, based on van Son’s result, ...[26]. Based on the assumption that spin-scattering occurs on a much slower timescale than other electron scattering events [25] and assuming a perfect interface without ...
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Temperature dependence of shot noise in double barrier magnetic tunnel junctions
... In conclusion, we measured shot noise at room temperature in a high-frequency bandwidth (2.1–2.5 MHz) and find that shot noise in the asymmetric DBMTJ shows temperature and magnetic state dependence. At a given ...
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