Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites
Само за регистроване кориснике
2011
Аутори
Cekić, Božidar Đ.Ivanovski, Valentin N.
Codescu, Mirela
Umićević, Ana
Barudžija, Tanja
Patroi, Eros
Конференцијски прилог (Објављена верзија)
,
© (2011) Trans Tech Publications
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Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/alpha-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission Fe-57 Mossbauer spectra at the room temperature, hardened of the alpha-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the alpha-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k(1), 16k(2), 8j(1), 8j(2), 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites Fe-I(8g), Fe-II(8g) and Fe-III(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites.
Кључне речи:
Magnetic nanocomposites / Mossbauer spectrometer / XRD analysis / internal magnetic field / quadrupole splittingИзвор:
Solid State Phenomena, 2011, 170, 154-159Финансирање / пројекти:
- Структурне, динамичке и спектроскопске карактеристике интерметалика и полупроводника (RS-MESTD-MPN2006-2010-141022)
- Romanian grant [PNII 12-086/2008]
- Bilateral collaboration INCDIE ICPE-CA Bucharest JINR Dubna [04-4-1069-2009/2011, agreement no. 3887-4-09/11/2009]
Напомена:
- 17th International Conference on Solid Compounds of Transition Elements, Sep 05-10, 2010, Imperial Hotel Convent Ctr, Annecy, France
DOI: 10.4028/www.scientific.net/SSP.170.154
ISSN: 1012-0394
WoS: 000291703400034
Scopus: 2-s2.0-79956265486
Колекције
Институција/група
VinčaTY - CONF AU - Cekić, Božidar Đ. AU - Ivanovski, Valentin N. AU - Codescu, Mirela AU - Umićević, Ana AU - Barudžija, Tanja AU - Patroi, Eros PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6914 AB - Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/alpha-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission Fe-57 Mossbauer spectra at the room temperature, hardened of the alpha-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the alpha-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k(1), 16k(2), 8j(1), 8j(2), 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites Fe-I(8g), Fe-II(8g) and Fe-III(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites. C3 - Solid State Phenomena T1 - Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites VL - 170 SP - 154 EP - 159 DO - 10.4028/www.scientific.net/SSP.170.154 ER -
@conference{ author = "Cekić, Božidar Đ. and Ivanovski, Valentin N. and Codescu, Mirela and Umićević, Ana and Barudžija, Tanja and Patroi, Eros", year = "2011", abstract = "Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/alpha-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission Fe-57 Mossbauer spectra at the room temperature, hardened of the alpha-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the alpha-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k(1), 16k(2), 8j(1), 8j(2), 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites Fe-I(8g), Fe-II(8g) and Fe-III(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites.", journal = "Solid State Phenomena", title = "Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites", volume = "170", pages = "154-159", doi = "10.4028/www.scientific.net/SSP.170.154" }
Cekić, B. Đ., Ivanovski, V. N., Codescu, M., Umićević, A., Barudžija, T.,& Patroi, E.. (2011). Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites. in Solid State Phenomena, 170, 154-159. https://doi.org/10.4028/www.scientific.net/SSP.170.154
Cekić BĐ, Ivanovski VN, Codescu M, Umićević A, Barudžija T, Patroi E. Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites. in Solid State Phenomena. 2011;170:154-159. doi:10.4028/www.scientific.net/SSP.170.154 .
Cekić, Božidar Đ., Ivanovski, Valentin N., Codescu, Mirela, Umićević, Ana, Barudžija, Tanja, Patroi, Eros, "Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites" in Solid State Phenomena, 170 (2011):154-159, https://doi.org/10.4028/www.scientific.net/SSP.170.154 . .