Complex magnetic ordering in CeGe1.76 studied by neutron diffraction

W. T. Jayasekara; W. Tian; H. Hodovanets; P. C. Canfield; S. L. Bud'Ko; A. Kreyssig; A. I. Goldman

doi:10.1103/PhysRevB.90.134423

Complex magnetic ordering in CeGe1.76 studied by neutron diffraction

W. T. Jayasekara, W. Tian, H. Hodovanets, P. C. Canfield, S. L. Bud'Ko, A. Kreyssig, A. I. Goldman

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Abstract

Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At TN≈7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector (0 0 τ) with τ≈14 and the magnetic moment along the a axis of the orthorhombic unit cell. Below TLI≈5 K, the magnetic structure locks in to a commensurate structure with τ=14 and the magnetic moment remains along the a axis. Below T4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.

Original language	English
Article number	134423
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	90
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.90.134423
State	Published - Oct 29 2014

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title = "Complex magnetic ordering in CeGe1.76 studied by neutron diffraction",

abstract = "Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At TN≈7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector (0 0 τ) with τ≈14 and the magnetic moment along the a axis of the orthorhombic unit cell. Below TLI≈5 K, the magnetic structure locks in to a commensurate structure with τ=14 and the magnetic moment remains along the a axis. Below T4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.",

author = "Jayasekara, {W. T.} and W. Tian and H. Hodovanets and Canfield, {P. C.} and Bud'Ko, {S. L.} and A. Kreyssig and Goldman, {A. I.}",

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AU - Jayasekara, W. T.

AU - Tian, W.

AU - Hodovanets, H.

AU - Canfield, P. C.

AU - Bud'Ko, S. L.

AU - Kreyssig, A.

AU - Goldman, A. I.

PY - 2014/10/29

Y1 - 2014/10/29

N2 - Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At TN≈7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector (0 0 τ) with τ≈14 and the magnetic moment along the a axis of the orthorhombic unit cell. Below TLI≈5 K, the magnetic structure locks in to a commensurate structure with τ=14 and the magnetic moment remains along the a axis. Below T4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.

AB - Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At TN≈7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate magnetic structure characterized by a magnetic propagation vector (0 0 τ) with τ≈14 and the magnetic moment along the a axis of the orthorhombic unit cell. Below TLI≈5 K, the magnetic structure locks in to a commensurate structure with τ=14 and the magnetic moment remains along the a axis. Below T4 K, we find additional half-integer and integer indexed magnetic Bragg peaks consistent with a second commensurately ordered antiferromagnetic state.

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JO - Physical Review B - Condensed Matter and Materials Physics

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Complex magnetic ordering in CeGe1.76 studied by neutron diffraction

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