Analysis and experimental research on high frequency magnetic properties of different magnetostrictive materials under variable temperature conditions

Abstract

Magnetostrictive materials have excellent magneto-mechanical properties and are widely used in the field of energy conversion. Temperature has an important influence on the magnetic properties of them. Accurately studying the temperature dependence of magnetostrictive materials is a necessary prerequisite for the design of precision actuators. In this paper, we constructed a high-frequency magnetic property measurement system that can control the temperature. The magnetic characteristics of Terfenol-D, Fe-Ga and Fe-Co were measured at temperatures ranging from 10 °C to 80 °C, the frequencies from 1 kHz to 20 kHz and magnetic induction amplitudes from 0.01 T to 0.07 T. The temperature dependence of the three materials under different exciting conditions was comprehensively compared. The variation trends and temperature sensitivities of the coercivity, permeability, equivalent inductance, equivalent resistance and the magnetic energy losses are analyzed respectively. The results of this paper are oriented to practical engineering applications and can be used for high-frequency loss prediction and temperature control system design.

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

“…Comparison of several common magnetostrictive alloys in terms of the main properties important in the context of their use at elevated frequencies. Data taken from literary sources [34][35][36][37][38]. The information for bulk as cast polycrystalline samples is preferably used.…”

Development and testing of a discrete coil magnetostrictive actuator

“…In order to promote the application of magnetostrictive actuators in aero engines, research has extensively focused on high dynamic [11], large displacement output [10,12,13] and the temperature dependence of magnetostrictive actuators [14][15][16] and has achieved remarkable results. Currently, one of the primary factors constraining the further application of magnetostrictive actuators is the issue of their drive system.…”

Magnetic Energy Losses and Temperature Control System for Giant Magnetostrictive Transducer

“…In references [ 3 , 4 , 5 , 6 , 7 ] established loss models to predict the loss characteristics of materials. For the magnetic properties of magnetostrictive materials, Huang et al focused on temperature as a factor to study the variation of magnetic properties and loss characteristics of various magnetostrictive materials [ 8 ]. Birčáková et al, presented a wide frequency and magnetic-field-range dependencies of core losses and permeability in magnetostrictive materials [ 9 ].…”

“…Birčáková et al, presented a wide frequency and magnetic-field-range dependencies of core losses and permeability in magnetostrictive materials [ 9 ]. For the study of the temperature-rise mechanism, previous works mainly concentrate on dynamic losses of materials [ 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. The relationship among the losses of the transducer, frequency and magnetic field is not analyzed.…”