Modeling stress effects on magnetic hysteresis and Barkhausen emission using a hysteretic-stochastic model

Lo, C. C. H.; Lee, S.J.; Li, L.; Kerdus, L. C.; Jiles, David

doi:10.1109/tmag.2002.803612

Cited by 32 publications

(20 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When CoFe thickness continues to reduce to 45 nm and 30 nm, α increases only at a lower E-ield strength of 3 kV cm −1 and 2 kV cm −1 , respectively. The reason for this is that the giant ɛ FM in the thinner CoFe layers created by the FE layer results in domain wall pinning [34], which causes a signiicant increase in H c . In this study, α is two orders of magnitude larger than the 6 × 10 −8 s m −1 in the epitaxial La 0.67 Sr 0.33 MO 3 /(0 0 1) PMN-PT system [35].…”

Section: Resultsmentioning

confidence: 99%

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure

Yang¹,

Morley²,

Sharp³

et al. 2015

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

[13], Fe 3 O 4 /PZN-PT [14], NiFe 2 O 4 /(0 0 1) PMN-PT [15] and Ni/(1 1 0) PMN-PT [16]. Kim et al [17] studied the effects of the thickness and composition of the magnetic Co x Pd 1−x layer on the ME coupling strength. The ME constant (α) increased from 2 × 10 −7 s m −1 to 2.5 × 10 −7 s m −1 as the ilm thickness of Co 0.25 Pd 0.75 decreased from 30 nm to 10 nm. However, for both Co 0.22 Pd 0.0.78 and Co 0.18 Pd 0.0.82 compositions, α for the 10 nm thick magnetic ilm was lower than that for the 20 nm thick magnetic ilm due to the change of perpendicular magnetic anisotropy (PMA) at 10 nm. In addition, for ultrathin magnetic layers (<20 nm), the magnetostriction constant (λ) can be strongly inluenced by the thickness [18] according to the formula λ = λ b + λ i /t, where λ b is the magnetostriction of the bulk, λ i is the interfacial contribution and t is the magnetic layer thickness [19]. However, the effect of varying λ with t on ME coupling was not considered by Kim et al. AbstractCo 50 Fe 50 /(0 1 1)-oriented lead magnesium niobate-lead titanate (PMN-PT) multiferroic (MF) heterostructures were fabricated by RF sputtering magnetic ilms onto PMN-PT substrates. The effect of magnetic layer thickness (30 nm to 100 nm) on the magnetoelectric (ME) coupling in the heterostructures was studied independently, due to the almost constant magnetostriction constant (λ = 40 ± 5 ppm) and similar as-grown magnetic anisotropies for all studied magnetic layer thicknesses. A record high remanence ratio (M r /M s ) tunability of 95% has been demonstrated in the 65 nm Co 50 Fe 50 /PMN-PT heterostructure, corresponding to a large ME constant (α) of 2.5 × 10 −6 s m −1 , when an external electric ield (E-ield) of 9 kV cm −1 was applied. Such an MF heterostructure provides considerable opportunities for E-ield-controlled multifunctional devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure

Yang¹,

Morley²,

Sharp³

et al. 2015

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Literature survey reports broad utilization of the MBN technique in measuring residual stresses [20][21][22][23][24][25][26][27]. The MBN method is a fast, reliable, economic method, and it is appropriate either for laboratory of for industrial scale.…”

Section: Introductionmentioning

confidence: 99%

An accurate evaluation of the residual stress of welded electrical steels with magnetic Barkhausen noise

Vourna

Ktena²,

Tsakiridis

et al. 2015

Measurement

View full text Add to dashboard Cite

“…( ) ( Meanwhile, the variation of the ΔH p (y) signals can be well explained by the Jiles-Atherton-Sablik model. Based on the concept of "effective field theory" and "law of approach", the Jiles-Atherton-Sablik model for magneto-mechanical effect was presented by Jiles et al [25,26]. The magnetization caused by applied stress σ is equivalent to a magnetic field H σ for a macroscopic polycrystalline multi-domain system:…”

Section: Figure 6 the Formation And Expansion Of The Lüders Bandsmentioning

confidence: 99%

Monitoring yield failure of ferromagnetic materials with spontaneous abnormal magnetic signals

Qiu

2015

Teh. vjesn.

View full text Add to dashboard Cite

Original scientific paper Yield failure is a common failure mode of low carbon steels in practical engineering application, so detecting it timely and accurately is of great significance. Tensile tests were carried out under different loads which covered tensile elastic loads up to plastic deformation. Meanwhile, the normal components of spontaneous abnormal magnetic field, the H p (y) signals, were measured offline using the TSC-1M-4 type instrument. The correlation between the magnetic gradient K and the tension load F is discussed. The results show that the H p (y) signals, which change gradually from negative to positive, approach a straight line and have a unique zero-crossing point in the elastic stage, and the magnetic gradient K fluctuates with the load increasing. However, the distribution curve of the H p (y) signals has a peak and a trough in the yield stage, and the Lüders bands appear and expand as strain increases. The phenomenon of magnetic polarity reversal appears so that the magnetic gradient K changes from positive to negative, thus the mechanical state of the specimens can be judged from the magnetic gradient K.Keywords: magnetic domain; magnetic polarity reversal; metal magnetic memory; residual compressive stress; yield failure Praćenje izostanka popuštanja feromagnetskih materijala spontanim abnormalnim magnetskim signalima Izvorni znanstveni članak Izostanak popuštanja je uobičajena pojava kod nisko ugljičnih čelika u praktičnim inženjerskim primjenama pa je njegovo pravovremeno i točno otkrivanje od velike važnosti. Vlačni pokusi su se provodili pri različitim opterećenjima, od vlačnih elastičnih opterećenja do plastične deformacije. U međuvremenu, normalne komponente spontanog abnormalnog magnetskog polja, H p (y) signali, mjereni su samostalno, instrumentom tipa TSC-1M-4. Razmatrana je korelacija između magnetskog gradijenta K i opterećenja zbog vlaka F. Rezultati pokazuju da se H p (y) signali, koji se postepeno mijenjaju od negativnih do pozitivnih, približavaju ravnoj liniji i imaju jedinstvenu točku presjeka nultog izlaznog napona (zero-crossing point) u stadiju elastičnosti, i magnetski se gradijent K mijenja s porastom opterećenja. Međutim, krivulja raspodjele H p (y) signala dostiže vrhunac kod granice popuštanja i kako se povećava deformacija pojavljuju se i šire Lüders pojasi (Lüders bands). Javlja se fenomen promjene magnetskog polariteta tako da se magnetski gradijent K mijenja iz pozitivnog u negativni te se mehaničko stanje uzoraka može odrediti prema magnetskom gradijentu K.Ključne riječi: izostanak popuštanja; magnetsko područje; promjena magnetskog polariteta; magnetska memorija metala; zaostalo tlačno naprezanje

show abstract

Modeling stress effects on magnetic hysteresis and Barkhausen emission using a hysteretic-stochastic model

Cited by 32 publications

References 11 publications

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure

An accurate evaluation of the residual stress of welded electrical steels with magnetic Barkhausen noise

Monitoring yield failure of ferromagnetic materials with spontaneous abnormal magnetic signals

Contact Info

Product

Resources

About

Modeling stress effects on magnetic hysteresis and Barkhausen emission using a hysteretic-stochastic model

Cited by 32 publications

References 11 publications

Giant electric field tunable magnetic properties in a Co50Fe50/lead magnesium niobate–lead titanate multiferroic heterostructure

Giant electric field tunable magnetic properties in a Co50Fe50/lead magnesium niobate–lead titanate multiferroic heterostructure

An accurate evaluation of the residual stress of welded electrical steels with magnetic Barkhausen noise

Monitoring yield failure of ferromagnetic materials with spontaneous abnormal magnetic signals

Contact Info

Product

Resources

About

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure

Giant electric field tunable magnetic properties in a Co₅₀Fe₅₀/lead magnesium niobate–lead titanate multiferroic heterostructure