Výsledky vyhledávání

Akademický článek

Rotating magnetocaloric effect in polycrystals—harnessing the demagnetizing effect

Autor: R Almeida, S C Freitas, C R Fernandes, R Kiefe, J P Araújo, J S Amaral, J O Ventura, J H Belo, D J Silva

Publikováno v: JPhys Energy, Vol 6, Iss 1, p 015020 (2024)

Climate change and the increasing demand for energy globally have motivated the search for a more sustainable heat-pumping technology. Magnetic refrigeration stands as one of the most promising alternative technologies for clean and efficient heat pu

Externí odkaz: https://doaj.org/article/943a35fbc35748038f12f7c5d048655c

Zobrazit plný text záznamu

Untangling the role of the carbon matrix in the magnetic coupling of Ni@C nanoparticles with mixed FCC/HCP crystal structures

Autor: Mona Fadel, F. Julián Martín-Jimeno, M. P. Fernández-García, Fabián Suárez-García, Juan Ignacio Paredes, J. H. Belo, J. P. Araújo, Alaa Adawy, David Martínez-Blanco, Pablo Álvarez-Alonso, Jesús A. Blanco, Pedro Gorria

Publikováno v: Journal of Materials Chemistry C. 11:4070-4080

A novel two-step procedure based on the carbonization of Ni-based MOF allows the formation of Ni@C nanoparticles protected against oxidation. Different crystalline structures are formed, but only Ni-FCC is ferromagnetic.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94484241102dd69b3688a349031fe792
https://doi.org/10.1039/d3tc00257h

Zobrazit plný text záznamu

Direct Measurement of the Magnetocaloric Effect through Time-Dependent Magnetometry

Autor: R. Almeida, C. Amorim, J. S. Amaral, J. P. Araújo, J. H. Belo

The magnetocaloric effect of a given material is typically assessed through indirect estimates of the isothermal magnetic entropy change, ΔSM. While estimating the adiabatic temperature difference, ΔTad, is more relevant from the standpoint of refr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65de0da0fc49b677a788edd32a71955f
http://hdl.handle.net/10773/36179

Zobrazit plný text záznamu

Landau theory-based relaxational modeling of first-order magnetic transition dynamics in magnetocaloric materials

Autor: Rui M Costa, Edmund Lovell, R Almeida, R M C Pinto, Lesley F Cohen, A M Pereira, João P Araújo, J H Belo

Publikováno v: Journal of Physics D: Applied Physics. 56:155001

The magnetocaloric effect is often largest within the neighborhood of a first-order phase transition. This effect can be utilized in magnetocaloric refrigeration, which completely eliminates the need for the greenhouse gases utilized in conventional

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a7d251f38304cc807d9455f111746fb
https://doi.org/10.1088/1361-6463/acbe4e

Zobrazit plný text záznamu

Indium segregation in Gd5(Si, Ge)4 magnetocaloric materials

Autor: Vitalij K. Pecharsky, G.N.P. Oliveira, César Magén, J. P. Araújo, A.M.L. Lopes, J. H. Belo, Yaroslav Mudryk, Alberto M. Pereira, N. Marcano, Pedro A. Algarabel, Durga Paudyal, M. R. Ibarra, Luis Morellón

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname

Chemical substitution is one of the most efficient tools to tune and optimize magnetic and magnetocaloric properties of the giant magnetocaloric materials. In particular, Indium substitutions could be useful both for tuning properties of these intere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0861c42e1a99afeeda4e40ca0c6951dc
http://hdl.handle.net/10261/280346

Zobrazit plný text záznamu

Effect of Ti doping on the structural, morphological and magnetic properties of La0.7Ga0.3Fe1-xTixO3

Autor: M. Gassoumi, W. Nouira, Rita Carvalho Veloso, R. Ghanem, Carlos Eduardo Pereira, João Ventura, Kamel Khirouni, João P. Araújo, J. H. Belo

Publikováno v: Results in Physics, Vol 26, Iss, Pp 104342-(2021)

Orthoferrites perovskites are an important family of materials in the field of nanotechnology, particularly for cathodes in solid oxide fuel cells. Doping these materials enables the enhancement and control of their properties. In this context, we st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be52c4ab3d3c3a68de239163b19b7d4e
http://www.sciencedirect.com/science/article/pii/S2211379721004708

Zobrazit plný text záznamu

Pressure dependence of the Griffiths-like phase in 5:4 intermetallics

Autor: M. R. Ibarra, Luis Morellón, N. Marcano, André Pereira, Pedro A. Algarabel, J. P. Araújo, J. H. Belo, J. Rodríguez Fernández, César Magén

Publikováno v: Phys. Rev. B 102, 174416
UCrea Repositorio Abierto de la Universidad de Cantabria
instname
Zaguán. Repositorio Digital de la Universidad de Zaragoza
Zaguán: Repositorio Digital de la Universidad de Zaragoza
Universidad de Zaragoza

We report a study of the effect of hydrostatic pressure (P) on the Griffiths-like phase in selected compounds of the R5(SixGe1 ? x)4 family of alloys (Tb4.925La0.075Si2Ge2 and Gd5Ge4) which present either the Gd5Si2Ge2-type (monoclinic, M) or the Sm5

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fec391df53ab7ad0f10cbc1eb966a9b9
https://doi.org/10.1103/physrevb.102.174416

Zobrazit plný text záznamu

Effective production of multifunctional magnetic-sensitive biomaterial by an extrusion-based additive manufacturing technique

Autor: Nilza Ribeiro, J. H. Belo, Ana Filipa Rodrigues, Vitor S. Amaral, Susana M. Olhero, P.M.C. Torres, Manuel J.S. Barros, Aureliana Sousa, João C.C. Abrantes, Rafaela Presa, Ana Bettencourt, João S. Amaral, Manuel Bañobre-López

Publikováno v: Biomedical materials (Bristol, England). 16(1)

A calcium phosphate (CaP)-based scaffold used as synthetic bone grafts, which smartly combines precise dimensions, controlled porosity and therapeutic functions, presents benefits beyond those offered by conventional practices, although its fabricati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1402eded52e4ed3e5e451be7b642780
https://pubmed.ncbi.nlm.nih.gov/32750692

Zobrazit plný text záznamu

Magnetostriction in Amorphous Co66Fe34 Microcantilevers Fabricated with Hydrogenated Amorphous Silicon

Autor: V. Chu, B.W.M. Silveira, Orlando Frazão, T.D. Ferreira, J.P. Conde, J. H. Belo, A. M. Pereira, J.A. Silva, R. Pinto, Ana L. Pires

Publikováno v: EPJ Web of Conferences, Vol 233, p 05003 (2020)

To study the magnetostriction of Co66Fe34 thin films, amorphous silicon microcantilevers were prepared by surface micromachining, and the 136 nm-thick magnetostrictive film was deposited by electron beam physical vapor deposition and patterned on top

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeac0f6aa9fc696974966780097136a6
https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_05003.pdf

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání