scholarly journals The emergence of high room temperature in-plane and out-of-plane magnetostriction in polycrystalline CoFe2O4 film

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Suman Guchhait ◽  
H. Aireddy ◽  
A. K. Das
Keyword(s):  
Domain Wall ◽  
Cantilever Beam ◽  
Room Temperature ◽  
Wall Motion ◽  
Pulsed Laser ◽  
Domain Wall Motion ◽  
Laser Deposition ◽  
Suitable Candidate ◽  
Magnetostrictive Strain ◽  
Out Of Plane

AbstractThe polycrystalline CoFe2O4 (CFO) film on cantilever substrate of silicon was grown using pulsed laser deposition (PLD) method and investigated its in-plane and out-of-plane magnetostrictive strain at room temperature (300 K) using the indigenous optical Cantilever Beam Magnetometer (CBM). The film shows a high compressive magnetostrictive strain of ‒ 387 ppm and ‒ 708 ppm for in-plane and out-of-plane configurations, respectively. Considerably, the magnetostrictive strain loops (λ‒H) possess a certain degree of hysteresis with a symmetric butterfly shape. The origin of large compressive magnetostriction of CFO film is attributed to the non-180° domain wall motion followed by 90° domain rotation. The large values of saturation magnetostrictive strain make CFO film a suitable candidate in sensor design for different purposes.

scholarly journals Precession-torque-driven domain-wall motion in out-of-plane materials

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 055921 ◽  
Author(s):  
M. J. G. Peeters ◽  
F. C. Ummelen ◽  
M. L. M. Lalieu ◽  
J.-S. Kim ◽  
H. J. M. Swagten ◽  
...  
Keyword(s):  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Out Of Plane

CONFIGURATION AND POLARIZATION DEPENDENT TRANSVERSE DOMAIN WALL MOTION AND DOMAIN WALL SWITCHING IN FERROMAGNETIC NANOWIRE

SPIN ◽  
2013 ◽  
Vol 03 (01) ◽  
pp. 1350001 ◽  
Author(s):  
S. BARMAN ◽  
A. GANGULY ◽  
A. BARMAN
Keyword(s):  
Domain Wall ◽  
Spin Relaxation ◽  
Wall Motion ◽  
Translational Motion ◽  
Domain Wall Motion ◽  
Pulsed Current ◽  
Dominant Mechanism ◽  
Out Of Plane ◽  
Ferromagnetic Nanowire ◽  
Periodic Switching

We report that the current induced translational motion of transverse domain wall and domain wall switching in ferromagnetic nanowire is primarily governed by the configuration and polarization of the domain wall. The out-of-plane torque due to nonadiabacity and spin relaxation is found to be the dominant mechanism in the configuration and polarization dependent translational motion of the domain wall. The transverse domain wall undergoes a damped periodic back and forth translational motion along with a periodic switching from +ve polarization to -ve polarization and vice versa under the application of a pulsed current. The domain wall switching occurs at the start of each period of translation.

Faster 360° domain wall motion in nanostrip induced by spin-polarized current with out-of-plane magnetic field

2012 ◽  
Vol 407 (23) ◽  
pp. 4584-4587 ◽  
Author(s):  
Qiyuan Zhu ◽  
Congpu Mu ◽  
Haiyan Xia ◽  
Weiwei Wang ◽  
Jianbo Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Spin Polarized ◽  
Out Of Plane

Thickness dependence of current-induced domain wall motion in a Co/Ni multi-layer with out-of-plane anisotropy

2013 ◽  
Vol 102 (15) ◽  
pp. 152410 ◽  
Author(s):  
Hironobu Tanigawa ◽  
Tetsuhiro Suzuki ◽  
Shunsuke Fukami ◽  
Katsumi Suemitsu ◽  
Norikazu Ohshima ◽  
...  
Keyword(s):  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Thickness Dependence ◽  
Plane Anisotropy ◽  
Out Of Plane

scholarly journals Fast domain wall motion in nanostripes with out-of-plane fields

2008 ◽  
Vol 93 (8) ◽  
pp. 082503 ◽  
Author(s):  
Andrew Kunz ◽  
Sarah C. Reiff
Keyword(s):  
Domain Wall ◽  
Wall Motion ◽  
Domain Wall Motion ◽  
Out Of Plane

scholarly journals Annealing Condition Effects on the Structural Properties of FePt Nanoparticles Embedded in MgO via Pulsed Laser Deposition

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131
Author(s):  
Tingting Xiao ◽  
Qi Yang ◽  
Jian Yu ◽  
Zhengwei Xiong ◽  
Weidong Wu
Keyword(s):  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Annealing Process ◽  
Ultra High Vacuum ◽  
Laser Deposition ◽  
Fept Nanoparticles ◽  
Annealing Conditions ◽  
Vacuum Atmosphere

FePt nanoparticles (NPs) were embedded into a single-crystal MgO host by pulsed laser deposition (PLD). It was found that its phase, microstructures and physical properties were strongly dependent on annealing conditions. Annealing induced a remarkable morphology variation in order to decrease its total free energy. H2/Ar (95% Ar + 5% H2) significantly improved the L10 ordering of FePt NPs, making magnetic coercivity reach 37 KOe at room temperature. However, the samples annealing at H2/Ar, O2, and vacuum all showed the presence of iron oxide even with the coverage of MgO. MgO matrix could restrain the particles’ coalescence effectively but can hardly avoid the oxidation of Fe since it is extremely sensitive to oxygen under the high-temperature annealing process. This study demonstrated that it is essential to anneal FePt in a high-purity reducing or ultra-high vacuum atmosphere in order to eliminate the influence of oxygen.

Processing by Pulsed Laser Deposition and Structural, Morphological and Chemical Characterization of Bi-Pb-Sr-Ca-Cu-O and Bi-Pb-Sb-Sr-Ca-Cu-O Thin Films

2010 ◽  
Vol 75 ◽  
pp. 202-207
Author(s):  
Victor Ríos ◽  
Elvia Díaz-Valdés ◽  
Jorge Ricardo Aguilar ◽  
T.G. Kryshtab ◽  
Ciro Falcony
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Room Temperature ◽  
Pulsed Laser ◽  
Chemical Characterization ◽  
Laser Deposition ◽  
Nominal Composition ◽  
Deposition Parameters ◽  
The Relationship

Bi-Pb-Sr-Ca-Cu-O (BPSCCO) and Bi-Pb-Sb-Sr-Ca-Cu-O (BPSSCCO) thin films were grown on MgO single crystal substrates by pulsed laser deposition. The deposition was carried out at room temperature during 90 minutes. A Nd:YAG excimer laser ( = 355 nm) with a 2 J/pulse energy density operated at 30 Hz was used. The distance between the target and substrate was kept constant at 4,5 cm. Nominal composition of the targets was Bi1,6Pb0,4Sr2Ca2Cu3O and Bi1,6Pb0,4Sb0,1Sr2Ca2Cu3OSuperconducting targets were prepared following a state solid reaction. As-grown films were annealed at different conditions. As-grown and annealed films were characterized by XRD, FTIR, and SEM. The films were prepared applying an experimental design. The relationship among deposition parameters and their effect on the formation of superconducting Bi-system crystalline phases was studied.

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