Results 31 to 40 of about 9,673 (258)

Ultrafast demagnetization at high temperatures [PDF]

open access: yesJournal of Physics: Condensed Matter, 2018
Abstract Time-resolved pump-probe measurements were made at variable heat accumulation in Co/Pd superlattices. Heat accumulation increases the baseline temperature and decreases the equilibrium magnetization. Transient ultrafast demagnetization first develops with higher fluence in parallel with strong equilibrium thermal spin ...
F Hoveyda   +3 more
openaire   +3 more sources

CPCP-1: Thermal demagnetization data

open access: yes, 2021
The Colorado Plateau Coring Project Phase 1 (CPCP-1) acquired three continuous drill cores from Petrified Forest National Park (PFNP), Arizona, U.S.A. Two cores, CPCP-PFNP13-1A and CPCP-PFNP13-2B, hereafter CPCP-1A and CPCP-2B; respectively, intersected ...
Parker, William   +9 more
core   +1 more source

Thermal-demagnetization-enhanced hybrid fiber-based thermometer coupled with nitrogen-vacancy centers

open access: yes, 2019
Nitrogen-vacancy centers in diamond are attractive as quantum sensors owing to their remarkable optical and spin properties under ambient conditions.
Yang Dong (234336)   +11 more
core   +1 more source

OPTIMIZATION OF TIMES OF MAGNETIZATION AND DEMAGNETIZATION OF A STOPPED FREQUENCY-REGULATED ASYNCHRONOUS MOTOR

open access: yesElektrotehnìka ta Elektroenergetika, 2018
Purpose. Obtaining analytical dependencies for calculating the extreme (minimum) values of the main electrical energy losses of a three-phase short-circuited asynchronous engine in the regimes of its magnetization and demagnetization and determining the ...
V.A. Volkov
doaj   +1 more source

Multi-Objective Optimization of Permanent Magnet Synchronous Motor for Electric Vehicle Considering Demagnetization

open access: yesApplied Sciences, 2021
The irreversible demagnetization of permanent magnets causes the deterioration of the performance in permanent magnet synchronous motors (PMSMs), which are used for electric vehicles.
Yong-min You, Keun-young Yoon
doaj   +1 more source

Performance comparison between rotor flux-switching and stator flux-switching machines considering local demagnetization

open access: yesAIP Advances, 2017
This paper investigates the local permanent magnet (PM) demagnetization characteristics of stator-PM flux-switching (SPM-FS) machine and rotor-PM flux-switching (RPM-FS) machine.
Peng Su, Wei Hua
doaj   +1 more source

Predetermination of Currents and Field in Short-Circuit Voltage Operation for an Axial-Flux Permanent Magnet Machine [PDF]

open access: yes, 2008
Risk of irreversible magnet demagnetization during short-circuit fault is analyzed in case of an axial-flux dual-rotor machine, using a three-dimensional finite-element method (3D-FEM).
LOCMENT, Fabrice   +3 more
core  

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

open access: yesAdvanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon   +7 more
wiley   +1 more source

Experimental Study on Magnetization and Demagnetization Characteristics of X70 Steel Pipe

open access: yesShiyou jixie, 2022
The remanence in the pipe not only affects the detection accuracy, but also accelerates the corrosion rate in the pipe. In order to study the magnetization and demagnetization characteristics of X70 steel pipe, based on the analysis of material ...
Song Fulin, Zhao Hong
doaj  

Optimal Design of Spoke-Type IPM Motor Allowing Irreversible Demagnetization to Minimize PM Weight

open access: yesIEEE Access, 2021
In this study, we introduce an optimal design for a spoke-type interior permanent magnet (IPM) motor that can minimize PM weight by allowing irreversible demagnetization, unlike the conventional motor design method that does not allow irreversible ...
Keun-Young Yoon, Kyu-Yun Hwang
doaj   +1 more source

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