X-ray magnetic circular dichroism study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">TbNi</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:math>

Song, Changyong; Lang, J. C.; Detlefs, C.; Létoublon, Antoine; Good, W.; Kim, Jong Woo; Wermeille, D.; Bud’ko, Sergey L.; Canfield, Paul C.; Goldman, A. I.

doi:10.1103/physrevb.64.020403

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…4(a), see also § III.D -is attributed to an orthorhombic distortion of the tetragonal unit cell. A similar distortion was reported for TbNi 2 B 2 C. 16,29,31,35,36 Then the behavior of the forced magnetostriction of…”

Section: Magnetostrictionsupporting

confidence: 78%

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

ElMassalami

Moreno

Saeed

et al. 2009

J. Phys.: Condens. Matter

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Based on magnetization, specific heat, magnetostriction and neutron-diffraction studies on single-crystal TbCo(2)B(2)C, it is found out that the paramagnetic properties, down to liquid nitrogen temperatures, are well described by a Curie-Weiss behavior of the Tb(3+) moments. Furthermore, below T(c) = 6.3 K, the Tb sublattice undergoes a ferromagnetic (FM) phase transition with the easy axis being along the (100) direction and, concomitantly, the unit cell undergoes a tetragonal-to-orthorhombic distortion. The manifestation of an FM state in TbCo(2)B(2)C is unique among all other isomorphous borocarbides, in particular TbNi(2)B(2)C (T(N) = 15 K, incommensurate modulated magnetic state) even though the Tb ions in both isomorphs have almost the same crystalline electric field properties. The difference among the magnetic modes of these Tb-based isomorphs is attributed to a difference in their exchange couplings which are in turn caused by a variation in their lattice parameters and in the position of their Fermi levels.

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Section: Magnetostrictionsupporting

confidence: 78%

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

ElMassalami

Moreno

Saeed

et al. 2009

J. Phys.: Condens. Matter

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show abstract

“…31,32 The magnitude of the modulation vector decreases from 0.551a* near T N to 0.545a* at 2.3 K. 31 A weak ferromagnetic component develops below T WF Ϸ8 K and at lower temperature a squaring up of the modulated state occurs. 31 C M (T) of TbNi 2 B 2 C ͑Fig.…”

Section: B Tbni 2 B 2 Cmentioning

confidence: 99%

Magnon specific heat of single-crystal borocarbidesRNi2B2C
Massalami
¹
,
Rapp
²
,
Chaves
³

et al. 2003
Phys. Rev. B

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Zero-field specific heats of the single crystals RNi 2 B 2 C (RϭEr, Ho, Dy, Tb, Gd͒ were measured within the temperature range 0.1 KϽTϽ25 K. Linearized spin-wave analysis was successfully applied to account for and to rationalize the thermal evolution of the low-temperature magnetic specific heats of all the studied compounds ͑as well as the one reported for TmNi 2 B 2 C) in terms of only two parameters, namely, an energy gap ⌬ and a characteristic temperature . The evolution of and ⌬ across the studied compounds correlates very well with the known magnetic properties. , as a measure of the effective Ruderman-Kittel-Kasuya-Yosida exchange couplings, scales reasonably well with the de Gennes factor. ⌬, on the other hand, reflects predominately the anisotropic properties: ϳ2 K for GdNi 2 B 2 C, ϳ6 K for ErNi 2 B 2 C, ϳ7 K for TbNi 2 B 2 C, and ϳ8 K for each of HoNi 2 B 2 C and DyNi 2 B 2 C. The equality in ⌬ of HoNi 2 B 2 C and DyNi 2 B 2 C, coupled with the similarity in their magnetic configurations, indicates that a variation of x in the solid solution Ho x Dy 1Ϫx Ni 2 B 2 C (xϽ0.8 and T c ϽT N ) would not lead to any softening of ⌬. This supports the hypothesis of Cho et al. ͑Ref. 35͒ concerning the influence of the collective magnetic excitations on the superconducting state. This work underlines the importance of spin-wave excitations for a valid description of low-temperature thermodynamics of borocarbides.

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“…2-4͒, while the single-ion effect is predominant in compounds with, e.g., R = Tb, [5][6][7][8] Dy, 9,10 Ho, 11,12 and Er. [13][14][15] Compared to other terms in the magnetic Hamiltonian of borocarbides, these magnetoelastic interactions are not negligible; in fact, their presence is manifested in various properties; the most prominent example is the spontaneous tetragonal-to-orthorhombic distortion observed in compounds with R = Tb, [5][6][7][8] Dy, 10 Ho, 11,12 and Er. [13][14][15] Then, it is of interest to extensively investigate the character and strength of these interactions across the borocarbide series.…”

Section: Introductionmentioning

confidence: 99%

Magnetoelasticity andH−Tphase diagram ofTbNi2B2
ElMassalami
¹
,
Amara
²
,
Galéra
³

et al. 2007
Phys. Rev. B

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We investigated the magnetoelastic and magnetic properties of single-crystal TbNi 2 B 2 C within the paramagnetic and ordered phases and along both a and c axes. The measured paramagnetic and gamma-parastriction susceptibilities are satisfactorily reproduced by the theoretical calculations based on crystalline electric field and molecular field approximations. The features of the ␥-symmetry lowering mode indicate a noticeable orthorhombic distortion within both paramagnetic and magnetically ordered regions. The H-T phase diagram ͑H ʈ a͒ reveals a cascade of transformations that delineate the phase boundaries between a weak-ferromagnetic ͑WF͒ phase, an intermediate phase, and a paramagnetic saturated state. Interestingly, below 9 K and within the low-field regime, the phase boundary enclosing the WF state shows a reentrant behavior. Such a reentrance feature is associated with the presence of the net ferromagnetic component below T WF .

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X-ray magnetic circular dichroism study ofTbNi2B2C

Cited by 9 publications

References 20 publications

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

Magnon specific heat of single-crystal borocarbidesRNi2B2C
Massalami
¹
,
Rapp
²
,
Chaves
³

et al. 2003
Phys. Rev. B

Magnetoelasticity andH−Tphase diagram ofTbNi2B2
ElMassalami
¹
,
Amara
²
,
Galéra
³

et al. 2007
Phys. Rev. B

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X-ray magnetic circular dichroism study ofTbNi2B2C

Cited by 9 publications

References 20 publications

On the ferromagnetic structure of the intermetallic borocarbide TbCo2B2C

On the ferromagnetic structure of the intermetallic borocarbide TbCo2B2C

Magnon specific heat of single-crystal borocarbidesRNi2B2CMassalami1, Rapp2, Chaves3 et al. 2003Phys. Rev. B

Magnetoelasticity andH−Tphase diagram ofTbNi2B2ElMassalami1, Amara2, Galéra3 et al. 2007Phys. Rev. B

Contact Info

Product

Resources

About

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

On the ferromagnetic structure of the intermetallic borocarbide TbCo₂B₂C

Magnon specific heat of single-crystal borocarbidesRNi2B2C
Massalami
¹
,
Rapp
²
,
Chaves
³

et al. 2003
Phys. Rev. B

Magnetoelasticity andH−Tphase diagram ofTbNi2B2
ElMassalami
¹
,
Amara
²
,
Galéra
³

et al. 2007
Phys. Rev. B