Magnetic ordering in the TbNi5 hexagonal compound

Barthem, V. M. T. S.; Amorim, Humberto; Schmitt, D.; Gignoux, D.

doi:10.1016/s0304-8853(99)00544-2

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…Therefore, this confirms a suggestion made by the authors of refs. [5] and [6]. However, there are clear differences in detail between their suggestion and our findings.…”

contrasting

confidence: 99%

“…However, recent bulk property measurements indicate that the magnetic state of TbNi 5 may not be as simple a collinear ferromagnet as previously thought. From the resistivity and susceptibility measurements [5,6], it was suggested that at the transition temperature of 23 K TbNi 5 should undergo a para-helimagnetic transition, not a para-ferromagnetic transition as known so far. Furthermore, anomalous features found in the resistivity and susceptibility data led the authors of refs.…”

mentioning

confidence: 96%

“…Furthermore, anomalous features found in the resistivity and susceptibility data led the authors of refs. [5] and [6] to propose that the helimagnetic structure of TbNi 5 should exist over the temperature range from 16.5 to 23 K in applied magnetic fields smaller than 400 Oe. Similar behavior was previously observed for GdNi 5 and even metallic Gd [6], and these two Gd compounds were suggested to have similar helical magnetic structures.…”

mentioning

confidence: 99%

“…[5] and [6] to propose that the helimagnetic structure of TbNi 5 should exist over the temperature range from 16.5 to 23 K in applied magnetic fields smaller than 400 Oe. Similar behavior was previously observed for GdNi 5 and even metallic Gd [6], and these two Gd compounds were suggested to have similar helical magnetic structures. Another explanation for the resistivity anomaly was put forward a little earlier by Blanco et al [7]: such a resistivity anomaly could be caused by strong spin fluctuations, which might as well be enhanced near T C = 23 K. So far, there has been no other attempt to understand the origin of the anomalies found in the bulk properties of TbNi 5 .…”

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confidence: 99%

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New magnetic structure study of TbNi ₅ : Evidence of incommensurate structure

et al. 2003

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RENi 5 (RE=rare-earth ions) intermetallic compounds crystallize in the hexagonal CaCu 5 structure (space group P6/mmm) [1] and have been extensively studied for various reasons over the last decades. Magneto-crystalline anisotropy of rare-earth ions as well as indirect exchange interaction between them, so-called RKKY interaction, is important to understanding the magnetism of these systems.We have investigated the magnetic structure of TbNi 5 using neutron diffraction from 2.2 to 30 K using neutron diffraction studies to understand new magnetic satellites below T C = 23 K, which have never been reported before. These satellites can be indexed as (0, 0, 1 ± τ ), (1, 0, 1 ± τ ), (0, 0, 2 ± τ ), and (1, 0, 2±τ ), where τ is equal to 0.0194 r.l.u. (reciprocal lattice units) by analyzing the diffraction patterns. We have observed these new peaks in addition to magnetic peaks seen in previous measurements. We can understand this longperiod incommensurate structure in terms of two propagation vectors: k 1 = (0, 0, 0) and k 2 = (0, 0, τ). Our neutron diffraction measurements clearly show that TbNi 5 has an incommensurate magnetic structure over the whole temperature range below the magnetic ordering of T C = 23 K. Our studies, together with bulk measurements, suggest that TbNi 5 should have a modulated magnetic structure over the whole temperature range from 23 to 2 K, in contradiction to the long held view that TbNi 5 is a collinear ferromagnet below T C = 23 K.[1] J.H. Wernick and S. Geller, Acta Cryst. 12 (1995) 662.[2] Seongsu Lee et al., EuroPhys. Lett. 63 (2003) 350.

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“…Therefore, this confirms a suggestion made by the authors of refs. [5] and [6]. However, there are clear differences in detail between their suggestion and our findings.…”

contrasting

confidence: 99%

mentioning

confidence: 96%

mentioning

confidence: 99%

mentioning

confidence: 99%

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New magnetic structure study of TbNi ₅ : Evidence of incommensurate structure

et al. 2003

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“…The T C of all these compounds, determined from the first derivative of the ZFC plots, is listed in Table 1. The magnetization exhibits a sharp transition at 23 K in the case of TbNi 5 , which is in agreement with previous reports [16]. With substitution of Fe and Co, the transition becomes broader and the T C shifts to higher temperatures.…”

Section: Methodssupporting

confidence: 91%

Magnetic, magnetocaloric and neutron diffraction studies on TbNi5−xMx (M=Co and Fe) compounds

Haldar¹,

Dhiman²,

Das³

et al. 2011

Journal of Alloys and Compounds

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a b s t r a c tThe effect of substitution of Co and Fe for Ni in TbNi 5 on the structural, magnetic and magneto-thermal properties has been investigated. Considerable enhancement of Curie temperature is observed with Fe substitution, whereas the increase is nominal in the case of Co. Neutron diffraction measurements reveal the redistribution of moments and site preference of substitutional ions in Ni 2c and 3g sites. In TbNi 4 Fe, both Ni and Fe as well as Tb are found to carry moment while in the case of TbNi 4 Co, mainly Tb carries the moment. Magnetocaloric behavior has been investigated from the magnetization and the heat capacity measurements. The magnetic and magnetocaloric properties are found to be strongly correlated in these compounds.

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