An investigation on the mechanical properties of soft magnetostrictive FeCoCr films by nanoindentation

Baco, Saturi; Abbas, Qayes A.; Hayward, Thomas J.; Morley, N. A.

doi:10.1016/j.jallcom.2021.160549

Cited by 12 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Elastic modulus measurements of Bi–Sb electrodes were evaluated by a dynamic ultra-micro hardness tester (DUH-211S, Shimadzu Co., Ltd.) with a tetrahedral diamond indenter with 120° cone angle. − To evaluate the mechanical property of Bi–Sb itself without AB/CMC/SBR, we prepared film electrodes consisting only of Bi–Sb active material and Ti substrate by a gas deposition method. − The measurements were performed with the loading–unloading rate of 293 μN s –1 , the maximum load force of 4.9 mN, and the force retention time of 5 s. Figure S2 of the Supporting Information summarizes typical loading–unloading curves of Bi–Sb. The indentation elastic modulus was measured from slopes of the unloading curves. , …”

mentioning

confidence: 99%

See 1 more Smart Citation

Solid Solution Strengthening of Bismuth Antimonide as a Sodium Storage Material

et al. 2021

View full text Add to dashboard Cite

A relationship between the mechanical property and charge−discharge performance of bismuth antimonide (Bi−Sb) solid solution electrodes was experimentally investigated for the first time as Na-ion battery anodes. The nanoindentation measurements revealed that three kinds of electrodes of Bi−Sb solid solution (Bi 0.8 Sb 0.2 , Bi 0.5 Sb 0.5 , and Bi 0.2 Sb 0.8 ) showed 100 times higher indentation elastic modulus compared to the Bi electrode by the effect of solid solution strengthening and that Bi 0.2 Sb 0.8 has the most elastic property among the solid solutions. The charge−discharge cycling tests confirmed that the reversible capacities of a Bi electrode and Sb electrode rapidly decayed, owing to pulverization of active materials induced by their large volumetric changes during sodiation−desodiation reactions. The Bi-rich solid solution (Bi 0.8 Sb 0.2 ) also showed poor cyclability. It is suggested that the pulverization of Bi 0.8 Sb 0.2 could not be avoided because of its less elastic property. The cycling performance of Bi−Sb electrodes was remarkably improved with increasing the ratio of Sb. The Sb-rich solid solution (Bi 0.2 Sb 0.8 ) electrode exhibited the best performance with the reversible capacity of 520 mA h g −1 , even at the 200th cycle. We consider that the pulverization of Bi 0.2 Sb 0.8 was effectively suppressed because it has reasonably elastic property in addition to a high indentation elastic modulus as a result of the solid solution strengthening. This knowledge would be very meaningful in the development of the next-generation alloying-type anode materials with high capacities.

show abstract

mentioning

confidence: 99%

“…The indentation elastic modulus was measured from slopes of the unloading curves. 25,26 Figure 2 represents galvanostatic charge−discharge curves of the Bi−Sb electrodes at the second cycles. The Bi electrode showed two clear potential plateaus at 0.65 and 0.45 V versus Na + /Na in the charge (sodiation) process.…”

mentioning

confidence: 99%

Solid Solution Strengthening of Bismuth Antimonide as a Sodium Storage Material

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Regardless of the ordering, the straining curves followed an almost linear response showing yielding at ~4% strain. The Young's modulus was calculated to be ~170 GPa, lower than the 197 GPa presented by Belousov and Palii [79] but in closer agreement with the ~167 GPa obtained by Baco et al on FeCo thin films [115]. The ultimate tensile strength (UTS) for the different models was achieved at a similar strain of ~6.9%.…”

Section: Feco Binary Alloysupporting

confidence: 84%

Molecular dynamics study on the deformation and fracture of FeCo-based alloys

Hernandez Muralles

View full text Add to dashboard Cite

show abstract

“…[ 56,73 ] The applied stress can be roughly estimated as σ appl = E FeCo × ε, where E FeCo is the Young modulus of FeCo. Assuming E FeCo = 165 GPa, i.e., the value expected for thin FeCo layers, [ 74,75 ] we obtain σ appl = 4.1 GPa. This value is ≈4.5 times larger than that of the internal stresses (i.e., 900 MPa) used in the previous simulations of the unstrained MST.…”

Section: Discussionmentioning

confidence: 97%

Magnetostrictive and Electroconductive Stress‐Sensitive Functional Spider Silk

Spizzo

Greco

Bianco

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Electronics and soft robotics demand the development of a new generation of hybrid materials featuring novel properties. Among these, remarkable mechani cal properties are required to sustain mechanical stresses, and electrical and magnetic properties are essential to design the devices' interface. In this study, a hybrid material is presented, consisting of a spider silk thread, providing mechanical robustness, coated with a layer of a magnetostrictive FeCo alloy, which ensures both electrical conductivity and stress-sensitive magnetic properties. The durability and the homogeneity of the composite are validated, as well as its ability to respond to magnetic and mechanical stimuli. Despite the coating, the soft nature of the silk and its mechanical performances are preserved. The magnetic study reveals that the magnetic behavior of the film is strongly affected by the silk thread-FeCo layer interaction, especially under mechanical stresses. Indeed, when the composite is subjected to tensile strain, the magnetic signal changes accordingly, indicating that the layer-silk interaction is maintained and can be exploited to reveal the tensional state of the sample even under severe cycles. Therefore, the presented hybrid material is a flexible fiber with properties that are suitable for magneto-electronics applications, e.g., magnetic actuators as well as strain/stress sensors.

show abstract

An investigation on the mechanical properties of soft magnetostrictive FeCoCr films by nanoindentation

Cited by 12 publications

References 23 publications

Solid Solution Strengthening of Bismuth Antimonide as a Sodium Storage Material

Solid Solution Strengthening of Bismuth Antimonide as a Sodium Storage Material

Molecular dynamics study on the deformation and fracture of FeCo-based alloys

Magnetostrictive and Electroconductive Stress‐Sensitive Functional Spider Silk

Contact Info

Product

Resources

About