Zobrazeno 1 - 10
of 74
pro vyhledávání: '"G. C. HADJIPANAYIS"'
Autor:
O. Tosun, I. Ruzybayev, F. M. Abel, B. Balamurugan, R. Skomski, D. J. Sellmyer, G. C. Hadjipanayis
Publikováno v:
AIP Advances, Vol 9, Iss 12, Pp 125144-125144-5 (2019)
We have investigated the structural and magnetic properties of Co1-xVx nanoparticles (NPs) with composition x = 0.25 (stoichiometric) and 0.29 (under-stoichiometric) prepared by the cluster-beam deposition (CBD) technique. Our data shows that the as-
Externí odkaz:
https://doaj.org/article/905518d956ee48a2aec9ef71b9aa0d79
Autor:
A. M. Gabay, G. C. Hadjipanayis
Publikováno v:
AIP Advances, Vol 9, Iss 3, Pp 035143-035143-4 (2019)
Melt-spun Fe100-xNbx and Fe100-xTax alloys consisting of a hexagonal (C14) Laves phase and an iron-based bcc phase were found to exhibit room-temperature coercivities up to 0.45 and 0.48 kOe, respectively. The non-equilibrium C14 structures in the me
Externí odkaz:
https://doaj.org/article/7ad3e64780734430be0d0544df00e9ca
Autor:
A. M. Gabay, G. C. Hadjipanayis
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 056204-056204-5 (2018)
Recently, Fe-based rare-earth-free compounds with non-cubic crystal structures were proposed as a base for permanent magnets which would not rely on critical elements. In this work, two series of alloys, Zr27Fe73-wSiw (0 ≤ w ≤ 15) and Zr33-xFe52+
Externí odkaz:
https://doaj.org/article/41f3b5d8fb1a4f4ab6bcb727d7232f6c
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 056702-056702-5 (2018)
High concentration of the magnetically hard α phase in the Mn-Bi alloys is important for the development of these alloys as rare-earth-free permanent magnets. Among several explored manufacturing methods, melt-spinning followed by annealing is known
Externí odkaz:
https://doaj.org/article/d1d1f308d5974b7f91493a0384c51013
Autor:
A. M. Gabay, G. C. Hadjipanayis
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 056217-056217-5 (2017)
The possibility to suppress agglomeration of MnBi alloy particles during milling and their unwanted sintering during subsequent annealing was explored by embedding the particles in CaO through co-milling. A 15 h annealing of the micron-sized MnBi par
Externí odkaz:
https://doaj.org/article/4768510e499d45b1811b29d68e576661
Publikováno v:
AIP Advances, Vol 6, Iss 5, Pp 056027-056027-6 (2016)
Mechanochemical synthesis of submicron R2Fe14B particles with R = Dy, Nd, Pr has been performed successfully via high energy ball milling of rare-earth oxides, iron oxide and boron oxide in the presence of a reducing agent (Ca) and a dispersant mater
Externí odkaz:
https://doaj.org/article/4f6c77d750a2407c8ce5b7a6b8d64ed2
Publikováno v:
AIP Advances, Vol 6, Iss 5, Pp 056015-056015-6 (2016)
Ce1-xSmxFe9Co2Ti alloys based on the ThMn12-type crystal structure have been synthesized via melt-spinning of prefabricated alloys and via mechanochemical processing of CeO2- Sm2O3- Fe2O3-TiO2- Co - Ca - CaO powder mixtures. Coercive fields up to 0.8
Externí odkaz:
https://doaj.org/article/d66e5ef9fc9b47bda1af793dbc32e118
Autor:
G. C. Hadjipanayis, A. M. Gabay
Publikováno v:
JOM. 67:1329-1335
Synthesis of permanent magnet powders through mechanically and thermally activated reduction of metal oxides with calcium, which allows for the production of fine single crystal particles, may contribute to the ongoing search for alternatives to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c28c5ed96b77184ad4c8083cccec63c1
https://doi.org/10.1007/s11837-015-1426-4
https://doi.org/10.1007/s11837-015-1426-4
Publikováno v:
International Journal of Materials Research. 93:1002-1008
A comprehensive and systematic study has been made on Sm(Co, Fe, M, L)z magnets (M = Cu or Ni, and L = Zr or Ti) to completely understand the effects of composition and processing on the microstructure and magnetic properties of magnets. Ti-containin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05809e762f8e40991b45992e1df04e1f
https://doi.org/10.1515/ijmr-2002-0174
https://doi.org/10.1515/ijmr-2002-0174
Publikováno v:
Journal of Applied Physics. 91:6147-6153
The magnetic and structural properties of LaCo5-based LaxCo100−x (x=17–22) alloys have been studied in powders synthesized by mechanical milling and subsequent annealing. A record high coercivity (over 1.7 T) with a Mr/Ms ratio about 0.7 (measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8788ddb34b3eadc023f7f724bdd1319
https://doi.org/10.1063/1.1467628
https://doi.org/10.1063/1.1467628