Experimental study of magnetic ordering in single-crystalline<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mtext>U</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>NiSi</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Szlawska, Maria; Kaczorowski, D.; Reehuis, M.

doi:10.1103/physrevb.81.094423

Cited by 29 publications

(22 citation statements)

References 21 publications

(28 reference statements)

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“…It is generally known that dc-magnetization in the field cooled condition of canonical spin-glass systems is nearly independent of temperature below T * . 34) In contrast, the continuous enhancement of the dc-magnetization is frequently observed below T * in the cluster-glass system, [51][52][53][54] and it closely resembles the present observations for x ≥ 0.3. In particular, the overall temperature dependence of the dc-magnetization, frequency dependences of T * and amplitude χ ′ ac at T * are very similar to those of the CeNi 1−x Cu x system.…”

Section: Discussionsupporting

confidence: 90%

Ferromagnetic Cluster-Glass State in Itinerant Electron System Sr₁₋_xLa_xRuO₃

et al. 2014

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The magnetic and electronic properties of Sr 1−x La x RuO 3 were studied by means of dc-magnetization, acsusceptibility, specific heat, and electrical resistivity measurements. The dc-magnetization and ac-susceptibility measurements have revealed that the transition temperature and the ordered moment of the ferromagnetic order are strongly suppressed as La is substituted for Sr. The ac-susceptibility exhibits a peak at T * due to the occurrence of spontaneous spin polarization. Furthermore, we observed that T * shows clear frequency variations for x ≥ 0.3. The magnitude of the frequency shifts of T * is comparable to that of cluster-glass systems, and the frequency dependence is well described in terms of the Vogel-Fulcher law. On the other hand, it is found that the linear specific heat coefficient γ enhances with the suppression of the ferromagnetic order. The relatively large γ values reflect the presence of the Ru 4d state at Fermi level, and hence, the magnetism of this system is considered to be tightly coupled with the itinerant characteristics of the Ru 4d electrons. The present experimental results and analyses suggest that the intrinsic coexistence of the spatially inhomogeneous magnetic state and the itinerant nature of the Ru 4d electrons is realized in this system, and such a feature may be commonly involved in La-and Ca-doped SrRuO 3 .

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Section: Discussionsupporting

confidence: 90%

Ferromagnetic Cluster-Glass State in Itinerant Electron System Sr₁₋_xLa_xRuO₃

et al. 2014

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“…The results corroborated the ferromagnetic behaviour reported in Ref. [5] and additionally veried the absence of impurity phase UNiSi 2 that was observed in our previous study [6].…”

Section: Methodssupporting

confidence: 81%

“…In the latter study, the polarized neutron diraction measurement revealed that the uranium magnetic moments of 0.6 µ B are oriented in the ferromagnetic state perpendicular to the c-axis. Most recently, thermodynamic, electrical transport and neutron diraction measurements of single-crystalline U 2 NiSi 3 conrmed the ferromagnetic ordering below 26 K, with the uranium magnetic moments of 1.05 µ B [5].…”

Section: Introductionmentioning

confidence: 99%

“…The compound crystallizes with the AlB 2 -type structure, in which the U atoms occupy the Al(1a) position, while the Ni and Si atoms share the unique B(2d) site. The atomic disorder on the latter site leads to a small value of the residual resistivity ratio (RRR) close to 1 and to an enhanced * corresponding author; e-mail: D.Gnida@int.pan.wroc.pl residual resistivity, which amounts to about 390 µΩ cm and 160 µΩ cm for the electric current owing perpendicular and longitudinal to the c-axis, respectively [5,6]. As far as the magnetic properties are concerned, U 2 NiSi 3 was characterized in the early literature reports as a spinglass system with the freezing temperature of 22 K [7] or a re-entrant spin-glass with the ferromagnetic transition at 25 K [8].…”

Section: Introductionmentioning

confidence: 99%

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Quantum Interference in Disordered Ferromagnet U₂NiSi₃

et al. 2015

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A single-crystalline sample of disordered ferromagnetic U2NiSi3 was investigated by means of electrical resistivity measurements under ambient and high hydrostatic pressure. Temperature dependences of the electrical resistivity clearly reveal interplay of the ferromagnetic ordering and quantum interference eects resulting from crystallographic disorder. Electronelectron interaction manifests itself as a T 0.5 increase in the in-plane and out-of-plane electrical resistivity below 5 K. Weak localization is observed solely in the ab-plane as a linear-in-T contribution to resistivity, which suggests that internal magnetic eld does not break the interference of scattered electron waves in ab-plane. Applied hydrostatic pressure does not aect the T 0.5 electronelectron interaction contribution, however it diminishes the impact of weak localization on the ab-plane resistivity.

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“…This feature indicates that the magnetic moments in U 2 RhSi 3 are probably confined within the basal hexagonal plane. Similar spin arrangement was observed in closely related compounds such as U 2 NiSi 3 [22,5]) and U 2 PdSi 3 [11]. Fig.…”

Section: Magnetic Propertiessupporting

confidence: 72%