Neutron diffraction study of the magnetic ordering in BaCuO2 + x

X. L. Wang; J. A. Fernandez-Baca; Z. R. Wang; D. Vaknin; D. C. Johnston

doi:10.1016/0921-4526(95)00073-I

Neutron diffraction study of the magnetic ordering in BaCuO_{2 + x}

X. L. Wang, J. A. Fernandez-Baca, Z. R. Wang, D. Vaknin, D. C. Johnston

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Abstract

Neutron-diffraction measurements have revealed that BaCuO_{2 - x} orders antiferromagnetically below T_N = 15.0 ± 0.5 K with a magnetic propagation vector κ = [111]. The Cu atoms in the Cu₆ ring clusters, located at the (1/4,1/4,1/4) positions, order ferromagnetically within these clusters while the clusters order antiferromagnetically. The magnetic moment of each of the ordered Cu atoms is (0.89 ± 0.05)μ_B at T = 4.2 K. No evidence of long-range magnetic ordering of the Cu atoms in the Cu₁₈ clusters, located at the (0,0,0) and (1/2,1/2,1/2) positions, was found down to a temperature T = 2.5 K.

Original language	English
Pages (from-to)	97-99
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	213-214
Issue number	C
DOIs	https://doi.org/10.1016/0921-4526(95)00073-I
State	Published - Aug 1 1995

Funding

We acknowledge the valuable comments of Dr. J.W. Cable. ORNL is managed for the U.S. DOE by Martin Marietta Energy System, Inc., under Contract No. DE-AC05-84OR21400. Ames Laboratory is operated by lowa State University for the U.S. DOE under contract No W-7405-Eng-82. The work at Ames was supported by the Director for Energy Research, Office of Basic Energy Sciences.

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title = "Neutron diffraction study of the magnetic ordering in BaCuO2 + x",

abstract = "Neutron-diffraction measurements have revealed that BaCuO2 - x orders antiferromagnetically below TN = 15.0 ± 0.5 K with a magnetic propagation vector κ = [111]. The Cu atoms in the Cu6 ring clusters, located at the (1/4,1/4,1/4) positions, order ferromagnetically within these clusters while the clusters order antiferromagnetically. The magnetic moment of each of the ordered Cu atoms is (0.89 ± 0.05)μB at T = 4.2 K. No evidence of long-range magnetic ordering of the Cu atoms in the Cu18 clusters, located at the (0,0,0) and (1/2,1/2,1/2) positions, was found down to a temperature T = 2.5 K.",

author = "Wang, \{X. L.\} and Fernandez-Baca, \{J. A.\} and Wang, \{Z. R.\} and D. Vaknin and Johnston, \{D. C.\}",

year = "1995",

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doi = "10.1016/0921-4526(95)00073-I",

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T1 - Neutron diffraction study of the magnetic ordering in BaCuO2 + x

AU - Wang, X. L.

AU - Fernandez-Baca, J. A.

AU - Wang, Z. R.

AU - Vaknin, D.

AU - Johnston, D. C.

PY - 1995/8/1

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N2 - Neutron-diffraction measurements have revealed that BaCuO2 - x orders antiferromagnetically below TN = 15.0 ± 0.5 K with a magnetic propagation vector κ = [111]. The Cu atoms in the Cu6 ring clusters, located at the (1/4,1/4,1/4) positions, order ferromagnetically within these clusters while the clusters order antiferromagnetically. The magnetic moment of each of the ordered Cu atoms is (0.89 ± 0.05)μB at T = 4.2 K. No evidence of long-range magnetic ordering of the Cu atoms in the Cu18 clusters, located at the (0,0,0) and (1/2,1/2,1/2) positions, was found down to a temperature T = 2.5 K.

AB - Neutron-diffraction measurements have revealed that BaCuO2 - x orders antiferromagnetically below TN = 15.0 ± 0.5 K with a magnetic propagation vector κ = [111]. The Cu atoms in the Cu6 ring clusters, located at the (1/4,1/4,1/4) positions, order ferromagnetically within these clusters while the clusters order antiferromagnetically. The magnetic moment of each of the ordered Cu atoms is (0.89 ± 0.05)μB at T = 4.2 K. No evidence of long-range magnetic ordering of the Cu atoms in the Cu18 clusters, located at the (0,0,0) and (1/2,1/2,1/2) positions, was found down to a temperature T = 2.5 K.

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JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

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ER -

Neutron diffraction study of the magnetic ordering in BaCuO_{2 + x}

Abstract

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