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November 26, 2014 (v1)PublicationUploaded on: December 4, 2022
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February 21, 2023 (v1)Publication
Temperature-first order reversal curve (FORC) distributions of thermomagnetic phase transitions are a fingerprinting tool to identify features of the phase transformations of the material. However, they have two major limitations: Qualitative character, due to the shift of the loops with increasing driving forces, and long experimental time....
Uploaded on: March 1, 2023 -
July 15, 2020 (v1)Publication
In this work, the field dependence of the magnetocaloric effect of Gd bulk samples has been enhanced through nanostructuring of the material. Nanostructuring consists in multilayers preparation by alternative rf-sputtering deposition of Gd layers and Ti spacers onto glass substrates. The results obtained for the multilayers were compared to...
Uploaded on: December 5, 2022 -
October 25, 2022 (v1)Publication
High-entropy alloys (HEAs) have become a topic of high research interest due to the excellent mechanical properties that can be found in this new type of materials. However, their functional properties are usually modest when compared to conventional materials. The discovery of high-entropy alloys with an optimal combination of mechanical and...
Uploaded on: December 4, 2022 -
January 28, 2016 (v1)Publication
The influence of easy axis orientation and interparticle interactions on the apparent magnetic anisotropy distribution, obtained from the demagnetization curve analysis, has been studied. For any particle orientation, the method is useful in detecting multimodal distributions as well as effective anisotropy field values. In the case of...
Uploaded on: March 27, 2023 -
September 3, 2024 (v1)Publication
The search for high-performance functional alloys with improved service life and reliability entails the optimization of their mechanical properties. Recently, the high-entropy alloy (HEA) design concept has found new alloys with excellent mechanical properties. It utilizes multiprincipal elements to yield high configurational entropy of...
Uploaded on: September 4, 2024 -
April 16, 2019 (v1)Publication
Feldspar is a Na-K-Ca-Al tectosilicate, generally poor in iron or other elements with large magnetic moments. Being the most abundant constituent minerals in Earth's crust, feldspars are technologically used in a broad variety of applications, which include glass-manufacturing, fabrication of ceramics elements, fillers in paintings, enamels,...
Uploaded on: March 27, 2023 -
September 11, 2020 (v1)Publication
First Order Reversal Curve (FORC) distributions of magnetic materials are a well-known tool to extract information about hysteresis sources and magnetic interactions, or to fingerprint them. Recently, a temperature variant of this analysis technique (Temperature-FORC, TFORC) has been used for the analysis of the thermal hysteresis associated...
Uploaded on: December 4, 2022 -
June 30, 2021 (v1)Publication
The applicability of magnetocaloric materials is limited by irreversibility. In this work, we evaluate the reversible magnetocaloric response associated with magnetoelastic transitions in the framework of the Bean-Rodbell model. This model allows the description of both second- and first-order magnetoelastic transitions by the modification of...
Uploaded on: March 27, 2023 -
January 26, 2016 (v1)Publication
The magnetic entropy change in Fe92−xCr8Bx x=12,15 amorphous alloys has been studied. Increasing the B content, both the peak entropy change and the Curie temperature of the alloy increase. This is in agreement with an increase in the average magnetic moment per iron atom. The thermal and field dependences of the magnetic entropy change...
Uploaded on: March 27, 2023 -
February 1, 2016 (v1)Publication
A universal curve for the change in the magnetic entropy has been recently proposed for materials with second-order phase transitions. In this work we have studied the universal behavior of the magnetocaloric effect in the family of cobalt Laves phases, RCo2, and mixed manganites, La2/3(CaxSr(1−x))1/3MnO3, which exhibit first- and second-order...
Uploaded on: March 27, 2023 -
May 7, 2018 (v1)Publication
A computer‐controlled system for measuring M‐Hhysteresis loops of soft magnetic materials is described. It overcomes many of the problems associated with these kinds of measurements of low coercivity materials. The combination of ''low drift'' hardware and measurement procedure makes software correction unnecessary. At every field step, the...
Uploaded on: December 5, 2022 -
November 28, 2017 (v1)Publication
The magnetic entropy change (ΔSM), temperature of peak ΔSM (Tpk) and refrigerant capacity (RC) in Fe(RE)80B12Cr8 (RE = La, Ce, or Gd) alloys were studied. Increasing La, Ce, and Gd content led to relatively constant, decrease, and increase in Tpk, respectively. Both the phenomenologically constructed universal curve for ΔSM and field dependence...
Uploaded on: March 27, 2023 -
January 27, 2023 (v1)Publication
The system of superparamagnetic Co/Au bimetallic nanoparticles of average diameter 7 nm was investigated with respect to its magnetocaloric properties. DC magnetic measurements revealed the presence of field dependent zero field cooled M(T) maximum (6–8 K) and significant zero field cooled/field cooled irreversibility at low temperatures in the...
Uploaded on: March 1, 2023 -
December 4, 2017 (v1)Publication
A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are used as a reference material to compensate for the contribution of the sample holder to the experimental values. Fe78B12Cr8Ce...
Uploaded on: December 4, 2022 -
January 28, 2016 (v1)Publication
The influence of annealing temperature and crystallization on the magnetocaloric effect (MCE) of Fe-B-Cr-Gd partially crystalline alloys was studied. Although the alloys exhibited dissimilar devitrification behavior, all the alloys exhibited MCE behavior consistent with a phenomenological universal curve and theoretical power law expressions of...
Uploaded on: March 27, 2023 -
January 21, 2016 (v1)Publication
Magnetocaloric materials with coexisting magnetic phases appear either due to the phase coexistence in first order phase transitions, or due to the development of composites, which are known to enhance the refrigerant capacity and produce table-like magnetocaloric effect. However, interactions between phases are rarely considered. We have...
Uploaded on: March 25, 2023 -
December 7, 2021 (v1)Publication
The search for high-entropy alloys (HEAs), a new class of materials, with high magnetocaloric perfor- mance can address the open question about their potential in functional applications. HEAs exist in a vast compositional space but magnetocaloric HEAs typically exhibit modest magnetocaloric response as they undergo second-order magnetic phase...
Uploaded on: March 25, 2023