Development of magnetic order in the pseudo-ternary series ErNi1−Cu Al

Prchal, J.; Javorský, P.; Sechovský, V.; Dopita, Milan; Isnard, O.; Jurek, K.

doi:10.1016/j.jmmm.2004.05.008

Cited by 30 publications

(37 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second group of compounds (x = 0.5-0.9) is characterized by much broader anomalies in the C p (T ) and M (T ) dependences, the enhanced irreversibility between ZFC and FC regimes with the maxima present in ZFC curves only and no metamagnetic transitions in their M (H) curves. Similar behavior was observed in the ErNi 1−x Cu x Al series for Cu concentrations where the loss of long range magnetic order had been revealed by neutron scattering experiments [2]. The detailed investigation of these PrNi 1−x Cu x Al compounds by AC--susceptibility, which will be subject of a separate paper, points to a transition into a spin glass state below the freezing temperatures around 4 K.…”

Section: Resultssupporting

confidence: 72%

See 1 more Smart Citation

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series

et al. 2010

Self Cite

View full text Add to dashboard Cite

Polycrystalline samples of PrNi 1−x Cu x Al series were studied by X-ray diffraction, magnetization and specific heat. The hexagonal ZrNiAl-type structure is preserved in the whole series. Compounds with x up to 0.4 order antiferromagnetically with the Néel temperatures between 3 and 5 K. The rest of the compounds (x = 0.5-0.9) exhibits a transition into a spin glass state below the freezing temperatures around 4 K. The analysis of the specific heat data reveals a quasi-doublet ground state well separated from higher crystal field levels in the whole series.

show abstract

Section: Resultssupporting

confidence: 72%

“…The substituted RNi 1−x Cu x Al (R = Tb, Er, Dy) compounds, crystallizing in the hexagonal ZrNiAl-type structure, show very interesting development of magnetic behavior [1][2][3]. The loss of the long-range magnetic order in the concentration region around x = 0.7 was observed in all these series.…”

Section: Introductionmentioning

confidence: 95%

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the past, several pseudoternary series with alloying Ni and Cu in the transition-metal sublattice e TbNi 1Àx Cu x Al [1] and ErNi 1Àx Cu x Al [2], in particular e were studied. In both the systems the RNiAl parent compounds possess the antiferromagnetic (AF) ground state whereas the RCuAl counterparts become ferromagnetic (F) at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Magnetism in DyNi1−Cu Al pseudoternary series

Prchal

Javorský²,

Vejpravová³

et al. 2010

Intermetallics

Self Cite

View full text Add to dashboard Cite

“…In the ErNi 1−x Cu x Al system, upon varying the Ni-Cu ratio, the compound ErNi 0.45 Cu 0.55 Al has been found to be at the boundary of the transition [5]. The compound exhibits coexistence of two isostructural phases between room temperature and 8 K and was originally expected not to exist in single-phase form.…”

Section: Resultsmentioning

confidence: 97%

“…A step in the temperature and composition dependence of the lattice constants a and c is present in many of these compounds (e.g. TbNiAl [1], GdNiAl [2], TbPdAl [3,1], GdPdAl [4], ErNi 1−x Cu x Al [5], DyNi 1−x Cu x Al [6], etc.). As a common feature, for all these compounds a first-order type of transition is found in which values of the c/a ratio in the range c/a ≈ 0.565 to 0.575 are forbidden.…”

Section: Introductionmentioning

confidence: 99%

Isostructural Transition in RTAl Compounds at High Temperatures

Prchal

Javorský

Boer³

et al. 2008

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

Based on previously discovered forbidden values of the c/a ratio, we studied anomalies in the temperature evolution of the lattice parameters (a, c) of several hexagonal RTAl compounds at high temperatures (above room temperature). The compound ErNi 0.45 Cu 0.55 Al, that seemed to be impossible to be prepared in single-phase form, reaches the single-phase state at temperatures above 493 K (220 • C). On the other hand, the compound TbNi 0.7 Cu 0.3 Al -that was expected to undergo a first-order structural phase transition at high temperatures -exhibits a second-order type transition when approaching the critical values of the c/a ratio. These results are in agreement with idea of a forbidden range of c/a values in these compounds.PACS numbers: 61.50.Ks, 61.05.cp IntroductionFor several RTAl compounds (R = rare earth; T = transition metal) crystallizing in the hexagonal ZrNiAl-type of structure, an anomalous behavior of the lattice parameters has been observed. A step in the temperature and composition dependence of the lattice constants a and c is present in many of these compounds (e.g. TbNiAl We have studied several compounds exhibiting this type of transition at high temperatures up to ≈ 1270 K (900• C) in order to check the possibility of the isostructural transition at high temperatures. We have focused particularly on the ErNi 0.45 Cu 0.55 Al and TbNi 0.7 Cu 0.3 Al compounds for their specific properties.Polycrystalline samples were prepared by a standard arc-melting process under Ar-protective atmosphere starting from a stoichiometric composition of the pure elements. The ingots were pulverized, and then checked by means of

show abstract

Development of magnetic order in the pseudo-ternary series ErNi1−Cu Al

Cited by 30 publications

References 16 publications

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series

Magnetism in DyNi1−Cu Al pseudoternary series

Isostructural Transition in RTAl Compounds at High Temperatures

Contact Info

Product

Resources

About

Development of magnetic order in the pseudo-ternary series ErNi1−Cu Al

Cited by 30 publications

References 16 publications

Structural and Magnetic Properties of the PrNi1-xCuxAl Series

Structural and Magnetic Properties of the PrNi1-xCuxAl Series

Magnetism in DyNi1−Cu Al pseudoternary series

Isostructural Transition in RTAl Compounds at High Temperatures

Contact Info

Product

Resources

About

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series

Structural and Magnetic Properties of the PrNi_1-xCu_xAl Series