Reconfigurable Microwave Properties in Trapezoid-shaped Nanomagnets without Bias Magnetic Field

2021 ◽  
pp. 168431
Author(s):  
Krishna Begari ◽  
Arabinda Haldar
Keyword(s):  
Magnetic Field ◽  
Microwave Properties ◽  
Bias Magnetic Field

Magnetic field and mechanical stress tunable microwave properties of composites containing Fe-based microwires

2014 ◽  
Vol 104 (12) ◽  
pp. 121912 ◽  
Author(s):  
Y. Luo ◽  
H. X. Peng ◽  
F. X. Qin ◽  
B. J. P. Adohi ◽  
C. Brosseau
Keyword(s):  
Magnetic Field ◽  
Mechanical Stress ◽  
Microwave Properties ◽  
Tunable Microwave ◽  
Properties Of Composites

Analysis of the giant magnetostrictive actuator with strong bias magnetic field

2015 ◽  
Vol 394 ◽  
pp. 416-421 ◽  
Author(s):  
Guangming Xue ◽  
Zhongbo He ◽  
Dongwei Li ◽  
Zhaoshu Yang ◽  
Zhenglong Zhao
Keyword(s):  
Magnetic Field ◽  
Bias Magnetic Field ◽  
Magnetostrictive Actuator

Non-linear dynamics of the Villari effect in the presence of a non-homogeneous magnetic field

2018 ◽  
Vol 233 (4) ◽  
pp. 431-440
Author(s):  
Andrzej Rysak ◽  
Magdalena Gregorczyk
Keyword(s):  
Magnetic Field ◽  
Time Series ◽  
Hysteresis Loops ◽  
Bias Field ◽  
Homogeneous Magnetic Field ◽  
Operating Conditions ◽  
Bias Magnetic Field ◽  
Linear Dynamics ◽  
Non Linear ◽  
Magnetostrictive Devices

Investigations of systems with an active magnetostrictive element generally assume the presence of an external homogeneous bias magnetic field. This article, however, presents the results of a study investigating a bimorph magnetostrictive-aluminium beam vibrating in a non-homogeneous bias field. By comparing results obtained under different operating conditions of the system, the combined effect of the non-linear beam stress and the non-homogeneous external magnetic field on the dynamics of the Villari phenomenon is determined. The preliminary results prove that the application of non-linear magnetic fields to the magnetostrictive devices ensures the extension of energy harvesting bandwidth of these devices and can be used to improve their control possibilities. A study of time series and hysteresis loops provides more detailed information about the non-linear magnetization and dynamics of the system.

scholarly journals Microwave properties of Fe(Se,Te) thin films in a magnetic field: pinning and flux flow

2020 ◽  
Vol 1559 ◽  
pp. 012055 ◽  
Author(s):  
Nicola Pompeo ◽  
Andrea Alimenti ◽  
Kostiantyn Torokhtii ◽  
Giulia Sylva ◽  
Valeria Braccini ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Microwave Properties ◽  
Flux Flow

scholarly journals Microwave Properties of Ferromagnetic Nanowires and Applications to Tunable Devices

2009 ◽  
Vol 152-153 ◽  
pp. 389-393 ◽  
Author(s):  
Judith Spiegel ◽  
Isabelle Huynen
Keyword(s):  
Magnetic Field ◽  
Dielectric Properties ◽  
External Magnetic Field ◽  
Filling Factor ◽  
Microwave Properties ◽  
Microwave Devices ◽  
Microwave Circuit ◽  
Broad Bandwidth ◽  
Ferromagnetic Nature ◽  
The One

Microwave devices as circulators or tunable filters demand nowadays small size and broad bandwidth. Ferromagnetic nanowired membranes are ideal candidates for this purpose. This paper focuses on the dielectric properties of such substrates, as influenced by the ferromagnetic nature of nanowires and their filling factor. Two particular cases are considered: a membrane filled up to its top with nanowires, forming a one-layer substrate, and a membrane filled up to a certain percentage of its height with nanowires, forming a two-layer substrate. The models proposed in this paper for each case take the inductive and gyromagnetic effects in the wires into account. They predict for the one-layer case a magnetodielectric behavior which is tunable by applying an external magnetic field. The effect is no longer visible for the two-layer topology corresponding to microwave circuit applications.

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