Magnetic behavior of the ferromagnetic quantum chain systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB)

K. Kopinga; A. M.C. Tinus; W. J.M. De Jonge

doi:10.1103/PhysRevB.25.4685

Magnetic behavior of the ferromagnetic quantum chain systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB)

K. Kopinga, A. M.C. Tinus, W. J.M. De Jonge

Applied Physics and Science Education

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Abstract

Heat-capacity measurements on (C6H11NH3)CuBr3 (CHAB) in the region 0.45 < T<55 K are presented. Three-dimensional ordering is observed at Tc=1.50 K. The data are analyzed together with previously reported measurements on (C6H11NH3)CuCl3 (CHAC). Both compounds appear to be very good approximations of a ferromagnetic S=12 Heisenberg linearchain system with Jk50 K. From the data it is inferred that the intrachain interaction of CHAC contains about 2% uniaxial anisotropy, whereas CHAB contains about 5% easy-plane anisotropy. The results are corroborated by magnetization measurements on CHAB below Tc, which also reveal a metamagnetic transition for Hb (Hc=210Oe). From the value of Hc and the location of the tricitical point the interchain interactions in CHAB were found as zAFJAFk=-0.03 K, zFJFk0.08 K.

Original language	English
Pages (from-to)	4685-4690
Number of pages	6
Journal	Physical Review B
Volume	25
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.25.4685
Publication status	Published - 1 Jan 1982

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title = "Magnetic behavior of the ferromagnetic quantum chain systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB)",

abstract = "Heat-capacity measurements on (C6H11NH3)CuBr3 (CHAB) in the region 0.45 < T<55 K are presented. Three-dimensional ordering is observed at Tc=1.50 K. The data are analyzed together with previously reported measurements on (C6H11NH3)CuCl3 (CHAC). Both compounds appear to be very good approximations of a ferromagnetic S=12 Heisenberg linearchain system with Jk50 K. From the data it is inferred that the intrachain interaction of CHAC contains about 2% uniaxial anisotropy, whereas CHAB contains about 5% easy-plane anisotropy. The results are corroborated by magnetization measurements on CHAB below Tc, which also reveal a metamagnetic transition for Hb (Hc=210Oe). From the value of Hc and the location of the tricitical point the interchain interactions in CHAB were found as zAFJAFk=-0.03 K, zFJFk0.08 K.",

author = "K. Kopinga and Tinus, {A. M.C.} and {De Jonge}, {W. J.M.}",

year = "1982",

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T1 - Magnetic behavior of the ferromagnetic quantum chain systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB)

AU - Kopinga, K.

AU - Tinus, A. M.C.

AU - De Jonge, W. J.M.

PY - 1982/1/1

Y1 - 1982/1/1

N2 - Heat-capacity measurements on (C6H11NH3)CuBr3 (CHAB) in the region 0.45 < T<55 K are presented. Three-dimensional ordering is observed at Tc=1.50 K. The data are analyzed together with previously reported measurements on (C6H11NH3)CuCl3 (CHAC). Both compounds appear to be very good approximations of a ferromagnetic S=12 Heisenberg linearchain system with Jk50 K. From the data it is inferred that the intrachain interaction of CHAC contains about 2% uniaxial anisotropy, whereas CHAB contains about 5% easy-plane anisotropy. The results are corroborated by magnetization measurements on CHAB below Tc, which also reveal a metamagnetic transition for Hb (Hc=210Oe). From the value of Hc and the location of the tricitical point the interchain interactions in CHAB were found as zAFJAFk=-0.03 K, zFJFk0.08 K.

AB - Heat-capacity measurements on (C6H11NH3)CuBr3 (CHAB) in the region 0.45 < T<55 K are presented. Three-dimensional ordering is observed at Tc=1.50 K. The data are analyzed together with previously reported measurements on (C6H11NH3)CuCl3 (CHAC). Both compounds appear to be very good approximations of a ferromagnetic S=12 Heisenberg linearchain system with Jk50 K. From the data it is inferred that the intrachain interaction of CHAC contains about 2% uniaxial anisotropy, whereas CHAB contains about 5% easy-plane anisotropy. The results are corroborated by magnetization measurements on CHAB below Tc, which also reveal a metamagnetic transition for Hb (Hc=210Oe). From the value of Hc and the location of the tricitical point the interchain interactions in CHAB were found as zAFJAFk=-0.03 K, zFJFk0.08 K.

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Magnetic behavior of the ferromagnetic quantum chain systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB)

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