Magnetic properties of YbFe4Al8 intermetallic compound. New antiferromagnetic superconductor

Drulis, H.; Gaczyński, P.; Iwasieczko, W.; Suski, W.; Kotur, B.

doi:10.1016/s0038-1098(02)00372-1

Cited by 18 publications

(16 citation statements)

References 16 publications

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“…The maximum of magnetisation is observed at the temperature of about 100 K. Below the maximum, the magnetisation starts to decrease and, at the compensation temperature T c = 34 K, it changes the sign to negative. Previously, the maximum was interpreted in terms of antiferromagnetic transition [1]. This explanation, however, seems to be misleading from the point of view of our Mössbauer measurement, in which the transition is observed near T N ≈ 150 K [see Fig.…”

mentioning

confidence: 66%

“…RFe 4 Al 8 compounds crystallise in the tetragonal ThMn 12 -type of crystal structure belonging to the I4/mmm space group. The compounds with nonmagnetic rare-earth R = Y, Lu, La, Ce exhibit an onset of the antiferromagnetic order in the temperatures ranging from 100 K to 200 K [1]. The magnetic properties of these systems are strongly influenced by annealing treatment during the sample preparation.…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic properties of these systems are strongly influenced by annealing treatment during the sample preparation. One of the most intriguing problem is the existence of superconductivity in the compounds with R = Lu or Yb [1,2], where the diamagnetic moment or negative magnetisation with respect to the applied magnetic field is observed. However, there are known numerous systems exhibiting a negative magnetisation, which is not related to the diamagnetic Meissner effect at all.…”

Section: Introductionmentioning

confidence: 99%

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Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Andrzejewski

Kowałczyk

Frąckowiak³

et al. 2005

Physica Status Solidi (b)

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PACS 72.15. Cz, 75.50.Ee, 76.80.+y We have investigated the effect of negative magnetisation in the YbFe 4 Al 8 compound by means of Möss-bauer effect and magnetic measurements. Our conclusions disagree with earlier studies of the compound, in which the existence of a small amount of superconducting phase was reported. We explain the effect of the negative magnetisation in terms of antiferromagnetic interactions between the moment of Yb and the effective moment of the canted Fe spins. The system exhibits negative magnetisation when the effective moment, which is oriented along the external magnetic field, is dominated at low temperatures by the opposite rare earth moment.

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mentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Andrzejewski

Kowałczyk

Frąckowiak³

et al. 2005

Physica Status Solidi (b)

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“…where θ = θ(B) is given by (7). Introducing dimensionless parameters α, b and dimensionless argument x:…”

Section: Distribution Of the Hyperfine Fieldmentioning

confidence: 99%

Advantages of Mössbauer polarimetric methods in material studies

et al. 2008

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Mössbauer spectroscopic methods combined with the use of circularly polarized radiation offer element selective, unambiguous measurements of the orientation of hyperfine magnetic field at the nucleus. The paper presents applications of the method in investigations of antiferromagnets and distribution of magnetization inside iron-based nanoparticles. Selected examples showing development of Mössbauer conversion electron polarimetric methods are also reported.

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“…The compounds containing nonmagnetic rare-earth ions like: Y, Lu, La, Ce are antiferromagnets with the transition temperatures changing from 100 K to 200 K [1]. If the rare earth is a magnetic ion (for example Yb) then the compounds exhibit a complex magnetic ordering with the antiferromagnetic interaction between the two magnetic sublattices.…”

Section: Introductionmentioning

confidence: 99%

Negative Magnetisation and Absence of Superconductivity in RFe₄Al₈(R=Lu, Yb) Compounds

2006

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We report researches for superconductivity and the effect of negative magnetisation in the RFe4Al8 (R = Lu, Yb) compounds by means of magnetic measurements and microwave absorption. Contrary to the earlier reports we do not confirm the existence of any traces of superconductivity in these compounds. Instead of the superconductivity and the Meissner effect, the YbFe 4 Al 8 compound exhibits the effect of negative magnetisation, whereas the LuFe 4 Al 8 compound shows an exact antiferromagnetic behaviour.

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Magnetic properties of YbFe4Al8 intermetallic compound. New antiferromagnetic superconductor

Cited by 18 publications

References 16 publications

Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Advantages of Mössbauer polarimetric methods in material studies

Negative Magnetisation and Absence of Superconductivity in RFe₄Al₈(R=Lu, Yb) Compounds

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Magnetic properties of YbFe4Al8 intermetallic compound. New antiferromagnetic superconductor

Cited by 18 publications

References 16 publications

Unusual negative magnetisation effect in antiferromagnetic YbFe4Al8 compound

Unusual negative magnetisation effect in antiferromagnetic YbFe4Al8 compound

Advantages of Mössbauer polarimetric methods in material studies

Negative Magnetisation and Absence of Superconductivity in RFe4Al8(R=Lu, Yb) Compounds

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Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Unusual negative magnetisation effect in antiferromagnetic YbFe₄Al₈ compound

Negative Magnetisation and Absence of Superconductivity in RFe₄Al₈(R=Lu, Yb) Compounds