Magnetism influenced by structural disorder in melt-spun DyMn6-aEuro parts per thousand x Ge6-aEuro parts per thousand x Fe (x) Al (x) (x=2.5, 3)
PBN-AR
Instytucja
Instytut Fizyki Molekularnej Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Hyperfine Interactions
ISSN
0304-3843
EISSN
1572-9540
Wydawca
DOI
URL
Rok publikacji
2013
Numer zeszytu
1-3
Strony od-do
69-74
Numer tomu
219
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Autorzy
(liczba autorów: 3)
Pozostali autorzy
+ 1
Streszczenia
Język
en
Treść
Different chemical and/or geometrical orders were found in melt-spun DyMn6 -aEuro parts per thousand x Ge6 -aEuro parts per thousand x Fe (x) Al (x) with x = 2.5 and 3 having fully amorphous and mixed (crystalline and amorphous) structure, respectively. Thermal variations in magnetization M from liquid helium up to room temperature for both samples are similar. Magnetization value at zero field cooled curve reaches about 0.1 mu(B) per formula unit at 2 K and then increases. Two maxima are visible, the first at 50 K (a sharp effect) and the second very broad ranging from 150 to 200 K. Fe-57 Mossbauer spectrometry investigation revealed a remaining magnetic component in addition to a prevailing quadrupolar feature. Application of a weak external magnetic field causes an increase in the mean hyperfine magnetic field B (hyp) and the volume fraction of magnetic component. This observation was confirmed by results of M(T), M(H) and AC magnetic susceptibility measurements. In short-range ordered crystallographic zones characteristic of melt-spun DyMn6 -aEuro parts per thousand x Ge6 -aEuro parts per thousand x Fe (x) Al (x) (x = 2.5, 3) alloys, the related magnetic ordering, called the mictomagnetism or the cluster spin glass appears.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
608100
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