Low temperature behavior of hyperfine fields in amorphous and nanocrystalline FeMoCuB

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10321679" target="_blank" >RIV/00216208:11320/15:10321679 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/15:00445093 RIV/68407700:21340/15:00232970

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4915098" target="_blank" >http://dx.doi.org/10.1063/1.4915098</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4915098" target="_blank" >10.1063/1.4915098</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Low temperature behavior of hyperfine fields in amorphous and nanocrystalline FeMoCuB

Popis výsledku v původním jazyce

Low temperature (4.2 K) magnetic behavior of Fe76Mo8Cu1B15 metallic glass was studied by Fe-57 Mossbauer spectrometry (MS) and Fe-57 NMR. Distributions of hyperfine magnetic fields P(B) were determined for as-quenched and annealed (nanocrystalline) samples with relative fraction of the grains about 43%. P(B) distributions were derived for both the amorphous matrix and nanocrystalline grains. NMR of alloys with natural and Fe-57 enriched Fe enabled to assess the contribution of B-11to the total NMR signal. P(B) distribution of the as-quenched alloy derived from MS matches reasonably well the one from NMR of the enriched sample. NMR signal from the sample with natural Fe exhibits contributions from B-11 nuclei. The principal NMR lines of the annealed alloys at 47 MHz correspond to bcc Fe nanocrystals. Small asymmetry of the lines towards higher frequencies might be an indication of possible impurity atoms in the bcc structure. The observed differences between natural and enriched samples

Název v anglickém jazyce

Low temperature behavior of hyperfine fields in amorphous and nanocrystalline FeMoCuB

Popis výsledku anglicky

Low temperature (4.2 K) magnetic behavior of Fe76Mo8Cu1B15 metallic glass was studied by Fe-57 Mossbauer spectrometry (MS) and Fe-57 NMR. Distributions of hyperfine magnetic fields P(B) were determined for as-quenched and annealed (nanocrystalline) samples with relative fraction of the grains about 43%. P(B) distributions were derived for both the amorphous matrix and nanocrystalline grains. NMR of alloys with natural and Fe-57 enriched Fe enabled to assess the contribution of B-11to the total NMR signal. P(B) distribution of the as-quenched alloy derived from MS matches reasonably well the one from NMR of the enriched sample. NMR signal from the sample with natural Fe exhibits contributions from B-11 nuclei. The principal NMR lines of the annealed alloys at 47 MHz correspond to bcc Fe nanocrystals. Small asymmetry of the lines towards higher frequencies might be an indication of possible impurity atoms in the bcc structure. The observed differences between natural and enriched samples

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-12449S" target="_blank" >GA14-12449S: Vliv radiace na vybrané fyzikální vlastnosti perspektivních slitin pro jaderná zařízení</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

—

Svazek periodika

117

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

1-4

Kód UT WoS článku

000354984100198

EID výsledku v databázi Scopus

2-s2.0-84925622502