Magnetic Excitations and Magnetic Ordering in Praseodymium

Jens Christian Gylden Houmann; M. Chapellier; A. R. Mackintosh; Poul Erik Bak; O. D. McMasters; K. A. Gschneider Jr.

doi:10.1103/PhysRevLett.34.587

Magnetic Excitations and Magnetic Ordering in Praseodymium

Jens Christian Gylden Houmann, M. Chapellier, A. R. Mackintosh, Poul Erik Bak, O. D. McMasters, K. A. Gschneider Jr.

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The dispersion relations for magnetic excitons propagating on the hexagonal sites of double-hcp Pr provide clear evidence for a pronounced anisotropy in the exchange. The energy of the excitations decreases rapidly as the temperature is lowered, but becomes almost constant below about 7 K, in agreement with a random-phase-approximation calculation. No evidence of magnetic ordering has been observed above 0.4 K, although the exchange is close to the critical value necessary for an antiferromagnetic state.

Original language	English
Journal	Physical Review Letters
Volume	34
Issue number	10
Pages (from-to)	587-5890
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.34.587
Publication status	Published - 1975

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title = "Magnetic Excitations and Magnetic Ordering in Praseodymium",

abstract = "The dispersion relations for magnetic excitons propagating on the hexagonal sites of double-hcp Pr provide clear evidence for a pronounced anisotropy in the exchange. The energy of the excitations decreases rapidly as the temperature is lowered, but becomes almost constant below about 7 K, in agreement with a random-phase-approximation calculation. No evidence of magnetic ordering has been observed above 0.4 K, although the exchange is close to the critical value necessary for an antiferromagnetic state.",

author = "Houmann, {Jens Christian Gylden} and M. Chapellier and Mackintosh, {A. R.} and Bak, {Poul Erik} and McMasters, {O. D.} and {Gschneider Jr.}, {K. A.}",

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language = "English",

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journal = "Physical Review Letters",

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T1 - Magnetic Excitations and Magnetic Ordering in Praseodymium

AU - Houmann, Jens Christian Gylden

AU - Chapellier, M.

AU - Mackintosh, A. R.

AU - Bak, Poul Erik

AU - McMasters, O. D.

AU - Gschneider Jr., K. A.

PY - 1975

Y1 - 1975

N2 - The dispersion relations for magnetic excitons propagating on the hexagonal sites of double-hcp Pr provide clear evidence for a pronounced anisotropy in the exchange. The energy of the excitations decreases rapidly as the temperature is lowered, but becomes almost constant below about 7 K, in agreement with a random-phase-approximation calculation. No evidence of magnetic ordering has been observed above 0.4 K, although the exchange is close to the critical value necessary for an antiferromagnetic state.

AB - The dispersion relations for magnetic excitons propagating on the hexagonal sites of double-hcp Pr provide clear evidence for a pronounced anisotropy in the exchange. The energy of the excitations decreases rapidly as the temperature is lowered, but becomes almost constant below about 7 K, in agreement with a random-phase-approximation calculation. No evidence of magnetic ordering has been observed above 0.4 K, although the exchange is close to the critical value necessary for an antiferromagnetic state.

U2 - 10.1103/PhysRevLett.34.587

DO - 10.1103/PhysRevLett.34.587

M3 - Journal article

SN - 0031-9007

VL - 34

SP - 587

EP - 5890

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

Magnetic Excitations and Magnetic Ordering in Praseodymium

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