Results 21 to 30 of about 204 (134)

Temperature dependence of Barkhausen Jumps in hysterisis loops of permalloy Ni₀Fe₂₀

, 2004
This thesis studies the temperature dependence of Barkhausen Jumps (BJ) using the Magneto-Optical Kerr effect (MOKE). Both positive and negative jumps are analyzed at different temperatures.
Gao, Bingrong
core   +1 more source

Experimental Evidence for a Metal‐Related Function of a Cyanobactin

Angewandte Chemie International Edition, Volume 65, Issue 25, 15 June 2026.
Cyanobactins such as patellamides are produced by cyanobacteria profusely and have been studied extensively, but almost exclusively for their cytotoxic properties. Discussed is unprecedented experimental evidence for a metal‐related biological function – likely CO2 transport from the ascidian to the cyanobacterial symbiont.
Philipp Baur, Timothy A. Hill, Kai‐Chen Wu, Junxian Lim, Brett M. Paterson, Gunasekaran Velmurugan, Bernard M. Degnan, David P. Fairlie, Peter Comba   +8 more
wiley   +1 more source

Large Barkhausen Discontinuities of Die-Drawn Fe-Si-B Amorphous Wire

, 1995
Magnetic properties and domain structure were investigated for die-drawn and subsequently annealed Fe-Si-B amorphous wires. It was found that the die-drawn wire has bamboo domain similar to that of the Co based wire with negative magnetostriction and ...
Takajo, M, Humphrey, FB, Yamasaki, J, Soeda, M   +3 more
core   +2 more sources

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

Advanced Functional Materials, Volume 36, Issue 41, 21 May 2026.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan, Joe Sunny, Tamer Karaman, Reshma Peremadathil‐Pradeep, Emily Darwin, Felix Büttner, Dieter Suess, Hans Josef Hug, Manfred Albrecht   +8 more
wiley   +1 more source

Proximity Ferroelectricity in Compositionally Graded Structures

Advanced Electronic Materials, Volume 12, Issue 7, 6 April 2026.
We perform the finite element modeling of the polarization switching in the compositionally graded AlN‐Al1‐xScxN and ZnO‐Zn1‐xMgxO structures and reveal the switching of spontaneous polarization in the whole structure in all these systems. The coercive field to switch is significantly lower than the electric breakdown field of the unswitchable AlN and ...
Eugene A. Eliseev, Anna N. Morozovska, Sergei V. Kalinin, Long‐Qing Chen, Venkatraman Gopalan   +4 more
wiley   +1 more source

From Classical Ferroelectricity to Emerging Low‐Dimensional Phases

Advanced Physics Research, Volume 4, Issue 11, November 2025.
Ferroelectricity is undergoing a renaissance, moving from classical perovskites to hafnia‐based thin films and low‐dimensional van der Waals crystals. Recent advances reveal exotic polarization mechanisms, ultrathin stability, and coupling with topology and valley physics.
Marius Adrian Husanu, Dana G. Popescu
wiley   +1 more source

Dynamics of a single-planar domain wall in ferroelectric-ferroelastic Gd2 (MoO4)3

, 2002
The field-induced jump-like dynamics of a single planar domain wall are investigated in single crystal uniaxial ferroelectric–ferroelastic Gd2(MoO4)3 containing extended bulk defects.
Shur, Alevtina G., Lupascu, Doru C., Shur, Vladimir Ya., Vladimir Ya. Shur, Doru C. Lupascu, Alevtina G. Shur   +5 more
core   +1 more source

Standalone Integrated Magnonic Devices

Advanced Materials, Volume 37, Issue 40, October 9, 2025.
A standalone (not requiring external bias magnetic field) and tunable magnonic device is reported with all‐electric input and output, fully integrated on silicon (total footprint of 100 × 150 µm) and 3–8 GHz frequency band. This is achieved by monolithic integration of a CoFeB conduit with RF antennas and an assembly of NiFe and SmCo micromagnets ...
M. Cocconcelli, F. Maspero, A. Micelli, A. Toniato, A. Del Giacco, N. Pellizzi, A. E. Plaza, A. Cattoni, M. Madami, R. Silvani, C. Adelmann, A. A. Hamadeh, P. Pirro, S. Tacchi, F. Ciubotaru, R. Bertacco   +15 more
wiley   +1 more source

High Magnetic Sensitivity at the Coercive Field Induced by Shear Horizontal SAW in Polycrystalline FeGa Films

Advanced Materials Technologies, Volume 10, Issue 18, September 18, 2025.
A theoretical framework links stress‐induced changes in the Young's modulus of Fe₇₂Ga₂₈ layers to their magnetization dynamics under SH‐SAW excitation. This interaction produces a sharp sensor response near the coercive field, highlighting FeGa's magnetoelastic sensitivity.
Juan Diego Aguilera, Rocio Ranchal, Fernando Gálvez, Jose Miguel Colino, Isabel Gràcia, Stella Vallejos, Antonio Hernando, Pilar Marín, Patricia de la Presa, Daniel Matatagui   +9 more
wiley   +1 more source

Domain wall propagation in bistable amorphous wires

, 2000
[EN] Magnetostrictive Fe-base amorphous wires spontaneously exhibit square-shaped hysteresis loops that is characterized by a single quite large Barkhausen jump when the switching magnetic field is reached.
Vázquez Vilalabeitia, Manuel, Chen, D.-X., García Miquel, Ángel Héctor   +2 more
core   +1 more source