Magnetic order of the iron spins in NdFeAsO

Ying Chen; J. W. Lynn; J. Li; G. Li; G. F. Chen; J. L. Luo; N. L. Wang; Pengcheng Dai; C. Dela Cruz; H. A. Mook

doi:10.1103/PhysRevB.78.064515

Magnetic order of the iron spins in NdFeAsO

Ying Chen, J. W. Lynn, J. Li, G. Li, G. F. Chen, J. L. Luo, N. L. Wang, Pengcheng Dai, C. Dela Cruz, H. A. Mook

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Abstract

Polarized and unpolarized neutron-diffraction measurements have been carried out to investigate the iron magnetic order in undoped NdFeAsO. Antiferromagnetic order is observed below 141(6) K, which is in close proximity to the structural distortion observed in this material. The magnetic structure consists of chains of parallel spins that are arranged antiparallel between chains, which is the same in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the c axis are antiparallel like LaFeAsO. The ordered moment is 0.25 (7) μB, which is the smallest moment found so far in these systems.

Original language	English
Article number	064515
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.78.064515
State	Published - Aug 21 2008

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title = "Magnetic order of the iron spins in NdFeAsO",

abstract = "Polarized and unpolarized neutron-diffraction measurements have been carried out to investigate the iron magnetic order in undoped NdFeAsO. Antiferromagnetic order is observed below 141(6) K, which is in close proximity to the structural distortion observed in this material. The magnetic structure consists of chains of parallel spins that are arranged antiparallel between chains, which is the same in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the c axis are antiparallel like LaFeAsO. The ordered moment is 0.25 (7) μB, which is the smallest moment found so far in these systems.",

author = "Ying Chen and Lynn, {J. W.} and J. Li and G. Li and Chen, {G. F.} and Luo, {J. L.} and Wang, {N. L.} and Pengcheng Dai and {Dela Cruz}, C. and Mook, {H. A.}",

year = "2008",

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doi = "10.1103/PhysRevB.78.064515",

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T1 - Magnetic order of the iron spins in NdFeAsO

AU - Chen, Ying

AU - Lynn, J. W.

AU - Li, J.

AU - Li, G.

AU - Chen, G. F.

AU - Luo, J. L.

AU - Wang, N. L.

AU - Dai, Pengcheng

AU - Dela Cruz, C.

AU - Mook, H. A.

PY - 2008/8/21

Y1 - 2008/8/21

N2 - Polarized and unpolarized neutron-diffraction measurements have been carried out to investigate the iron magnetic order in undoped NdFeAsO. Antiferromagnetic order is observed below 141(6) K, which is in close proximity to the structural distortion observed in this material. The magnetic structure consists of chains of parallel spins that are arranged antiparallel between chains, which is the same in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the c axis are antiparallel like LaFeAsO. The ordered moment is 0.25 (7) μB, which is the smallest moment found so far in these systems.

AB - Polarized and unpolarized neutron-diffraction measurements have been carried out to investigate the iron magnetic order in undoped NdFeAsO. Antiferromagnetic order is observed below 141(6) K, which is in close proximity to the structural distortion observed in this material. The magnetic structure consists of chains of parallel spins that are arranged antiparallel between chains, which is the same in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the c axis are antiparallel like LaFeAsO. The ordered moment is 0.25 (7) μB, which is the smallest moment found so far in these systems.

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U2 - 10.1103/PhysRevB.78.064515

DO - 10.1103/PhysRevB.78.064515

M3 - Article

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SN - 1098-0121

VL - 78

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 064515

ER -

Magnetic order of the iron spins in NdFeAsO

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