An overstoichiometric Nd?Fe?B hard magnetic material

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F10%3A00353549" target="_blank" >RIV/68081723:_____/10:00353549 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An overstoichiometric Nd?Fe?B hard magnetic material

Popis výsledku v původním jazyce

A commercial Nd-rich Nd?Fe?B-based hard magnetic material was studied. The thermomagnetic curve showed clearly besides Curie points of the Nd2Fe14B phase and ?-Fe also another critical temperature. Mössbauer (MS) phase analysis and X-ray diffraction analysis (XRD) showed in addition to the commonly known phases Nd2Fe14B and NdFe4B4 also some paramagnetic and ferromagnetic iron atoms (MS) and Fe17Nd2 intermetallics (XRD). During the exerted thermal treatment, the content of the Nd2Fe14B and NdFe4B4 phases remained almost unchanged, while iron atoms from remnant minor phases built a separate ?-Fe phase. The XRD pattern also showed the presence of some minor Nd phase. The results of Squid measurements suggest a nanocrystalline decoupled structure of the Nd-rich alloy in the optimized magnetic state. Measurement of the magnetization loop showed, in spite of small changes in the phase composition, that magnetic properties of the quality material deteriorated during the thermal treatment.

Název v anglickém jazyce

An overstoichiometric Nd?Fe?B hard magnetic material

Popis výsledku anglicky

A commercial Nd-rich Nd?Fe?B-based hard magnetic material was studied. The thermomagnetic curve showed clearly besides Curie points of the Nd2Fe14B phase and ?-Fe also another critical temperature. Mössbauer (MS) phase analysis and X-ray diffraction analysis (XRD) showed in addition to the commonly known phases Nd2Fe14B and NdFe4B4 also some paramagnetic and ferromagnetic iron atoms (MS) and Fe17Nd2 intermetallics (XRD). During the exerted thermal treatment, the content of the Nd2Fe14B and NdFe4B4 phases remained almost unchanged, while iron atoms from remnant minor phases built a separate ?-Fe phase. The XRD pattern also showed the presence of some minor Nd phase. The results of Squid measurements suggest a nanocrystalline decoupled structure of the Nd-rich alloy in the optimized magnetic state. Measurement of the magnetization loop showed, in spite of small changes in the phase composition, that magnetic properties of the quality material deteriorated during the thermal treatment.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/1M0512" target="_blank" >1M0512: Centrrum výzkumu práškových nanomateriálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Serbian Chemical Society

ISSN

0352-5139

e-ISSN

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Svazek periodika

75

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

SR - Surinamská republika

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000283207200011

EID výsledku v databázi Scopus

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