Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5 Ge4

W. Tian; A. Kreyssig; J. L. Zarestky; L. Tan; S. Nandi; A. I. Goldman; T. A. Lograsso; D. L. Schlagel; K. A. Gschneidner; V. K. Pecharsky; R. J. McQueeney

doi:10.1103/PhysRevB.80.134422

Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5 Ge4

W. Tian, A. Kreyssig, J. L. Zarestky, L. Tan, S. Nandi, A. I. Goldman, T. A. Lograsso, D. L. Schlagel, K. A. Gschneidner, V. K. Pecharsky, R. J. McQueeney

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Abstract

We present a single-crystal neutron diffraction study of the magnetic short-range correlations in Tb5 Ge4 which orders antiferromagnetically below the Neel temperature TN ≈ 92 K. Strong diffuse scattering arising from magnetic short-range correlations was observed in wide temperature ranges both below and above TN. The antiferromagnetic ordering in Tb5 Ge4 is described to consist of strongly coupled ferromagnetic block layers in the ac plane that stack along the b axis with weak antiferromagnetic interlayer coupling. Diffuse scattering was observed along both a and b directions indicating three-dimensional short-range correlations. Moreover, the q dependence of the diffuse scattering is Squared Lorentzian in form suggesting a strongly clustered magnetic state that may be related to the proposed Griffiths-like phase in Gd5 Ge4.

Original language	English
Article number	134422
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.80.134422
State	Published - Oct 28 2009
Externally published	Yes

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Tian, W., Kreyssig, A., Zarestky, J. L., Tan, L., Nandi, S., Goldman, A. I., Lograsso, T. A., Schlagel, D. L., Gschneidner, K. A., Pecharsky, V. K., & McQueeney, R. J. (2009). Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5 Ge4. Physical Review B - Condensed Matter and Materials Physics, 80(13), Article 134422. https://doi.org/10.1103/PhysRevB.80.134422

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title = "Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5 Ge4",

abstract = "We present a single-crystal neutron diffraction study of the magnetic short-range correlations in Tb5 Ge4 which orders antiferromagnetically below the Neel temperature TN ≈ 92 K. Strong diffuse scattering arising from magnetic short-range correlations was observed in wide temperature ranges both below and above TN. The antiferromagnetic ordering in Tb5 Ge4 is described to consist of strongly coupled ferromagnetic block layers in the ac plane that stack along the b axis with weak antiferromagnetic interlayer coupling. Diffuse scattering was observed along both a and b directions indicating three-dimensional short-range correlations. Moreover, the q dependence of the diffuse scattering is Squared Lorentzian in form suggesting a strongly clustered magnetic state that may be related to the proposed Griffiths-like phase in Gd5 Ge4.",

author = "W. Tian and A. Kreyssig and Zarestky, {J. L.} and L. Tan and S. Nandi and Goldman, {A. I.} and Lograsso, {T. A.} and Schlagel, {D. L.} and Gschneidner, {K. A.} and Pecharsky, {V. K.} and McQueeney, {R. J.}",

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doi = "10.1103/PhysRevB.80.134422",

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AU - Tian, W.

AU - Kreyssig, A.

AU - Zarestky, J. L.

AU - Tan, L.

AU - Nandi, S.

AU - Goldman, A. I.

AU - Lograsso, T. A.

AU - Schlagel, D. L.

AU - Gschneidner, K. A.

AU - Pecharsky, V. K.

AU - McQueeney, R. J.

PY - 2009/10/28

Y1 - 2009/10/28

N2 - We present a single-crystal neutron diffraction study of the magnetic short-range correlations in Tb5 Ge4 which orders antiferromagnetically below the Neel temperature TN ≈ 92 K. Strong diffuse scattering arising from magnetic short-range correlations was observed in wide temperature ranges both below and above TN. The antiferromagnetic ordering in Tb5 Ge4 is described to consist of strongly coupled ferromagnetic block layers in the ac plane that stack along the b axis with weak antiferromagnetic interlayer coupling. Diffuse scattering was observed along both a and b directions indicating three-dimensional short-range correlations. Moreover, the q dependence of the diffuse scattering is Squared Lorentzian in form suggesting a strongly clustered magnetic state that may be related to the proposed Griffiths-like phase in Gd5 Ge4.

AB - We present a single-crystal neutron diffraction study of the magnetic short-range correlations in Tb5 Ge4 which orders antiferromagnetically below the Neel temperature TN ≈ 92 K. Strong diffuse scattering arising from magnetic short-range correlations was observed in wide temperature ranges both below and above TN. The antiferromagnetic ordering in Tb5 Ge4 is described to consist of strongly coupled ferromagnetic block layers in the ac plane that stack along the b axis with weak antiferromagnetic interlayer coupling. Diffuse scattering was observed along both a and b directions indicating three-dimensional short-range correlations. Moreover, the q dependence of the diffuse scattering is Squared Lorentzian in form suggesting a strongly clustered magnetic state that may be related to the proposed Griffiths-like phase in Gd5 Ge4.

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U2 - 10.1103/PhysRevB.80.134422

DO - 10.1103/PhysRevB.80.134422

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VL - 80

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

M1 - 134422

ER -

Single-crystal neutron diffraction study of short-range magnetic correlations in Tb5 Ge4

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