Abstract
Mn (hfipbb) py (H2 O)0.5 [H2 hfipbb=4, 4′ -(hexafluoroisopropylidene) bis(benzoic acid), py=pyridine] is a recently discovered metal-organic coordination network. The crystal structure of this compound belongs to a triclinic space group P-1, and the lattice parameters are a=12.988 Å, b=13.296 Å, c=14.644 Å, α=115.13°, Β=95.61°, and γ=101.03°. Two crystallographically independent Mn atoms (Mn1 and Mn2) exist in this structure, and an alternate connection (-Mn1-Mn2-Mn1-Mn2-) through organic units along the x axis leads to a one-dimensional Mn2+ chain. Magnetic susceptibility M (T) H and isothermal magnetization M (H) were measured on single-crystal samples, as well as on powder samples of Mn (hfipbb) py (H2 O)0.5. Antiferromagnetic ordering was observed below a transition temperature of TN =9.0 K. High-temperature susceptibility data for powder samples were fitted to the Curie-Weiss law with θ=-30 K and an effective moment of μeff =5.7 μB, close to what is expected for a free Mn2+ ion. There is small but clear orientation dependence in the susceptibility data for single-crystal samples. The result of isothermal magnetization measured at 2 K is consistent with the interpretation of an antiferromagnetic ground state, and a slope change was seen at a critical field of Hc =18 kG, indicating a field-induced moment reorientation of the Mn2+ ions in this compound.
| Original language | English |
|---|---|
| Article number | 08J501 |
| Journal | Journal of Applied Physics |
| Volume | 99 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2006 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
Cite this
Magnetic properties of a metal-organic antiferromagnet Mn(hfipbb)py(H 2O) 0.5 . / Yuen, Tan; Lin, C. L.; Pan, Long; Huang, Xiaoying; Li, Jing.
In: Journal of Applied Physics, Vol. 99, No. 8, 08J501, 2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic properties of a metal-organic antiferromagnet Mn(hfipbb)py(H 2O) 0.5
AU - Yuen, Tan
AU - Lin, C. L.
AU - Pan, Long
AU - Huang, Xiaoying
AU - Li, Jing
PY - 2006
Y1 - 2006
N2 - Mn (hfipbb) py (H2 O)0.5 [H2 hfipbb=4, 4′ -(hexafluoroisopropylidene) bis(benzoic acid), py=pyridine] is a recently discovered metal-organic coordination network. The crystal structure of this compound belongs to a triclinic space group P-1, and the lattice parameters are a=12.988 Å, b=13.296 Å, c=14.644 Å, α=115.13°, Β=95.61°, and γ=101.03°. Two crystallographically independent Mn atoms (Mn1 and Mn2) exist in this structure, and an alternate connection (-Mn1-Mn2-Mn1-Mn2-) through organic units along the x axis leads to a one-dimensional Mn2+ chain. Magnetic susceptibility M (T) H and isothermal magnetization M (H) were measured on single-crystal samples, as well as on powder samples of Mn (hfipbb) py (H2 O)0.5. Antiferromagnetic ordering was observed below a transition temperature of TN =9.0 K. High-temperature susceptibility data for powder samples were fitted to the Curie-Weiss law with θ=-30 K and an effective moment of μeff =5.7 μB, close to what is expected for a free Mn2+ ion. There is small but clear orientation dependence in the susceptibility data for single-crystal samples. The result of isothermal magnetization measured at 2 K is consistent with the interpretation of an antiferromagnetic ground state, and a slope change was seen at a critical field of Hc =18 kG, indicating a field-induced moment reorientation of the Mn2+ ions in this compound.
AB - Mn (hfipbb) py (H2 O)0.5 [H2 hfipbb=4, 4′ -(hexafluoroisopropylidene) bis(benzoic acid), py=pyridine] is a recently discovered metal-organic coordination network. The crystal structure of this compound belongs to a triclinic space group P-1, and the lattice parameters are a=12.988 Å, b=13.296 Å, c=14.644 Å, α=115.13°, Β=95.61°, and γ=101.03°. Two crystallographically independent Mn atoms (Mn1 and Mn2) exist in this structure, and an alternate connection (-Mn1-Mn2-Mn1-Mn2-) through organic units along the x axis leads to a one-dimensional Mn2+ chain. Magnetic susceptibility M (T) H and isothermal magnetization M (H) were measured on single-crystal samples, as well as on powder samples of Mn (hfipbb) py (H2 O)0.5. Antiferromagnetic ordering was observed below a transition temperature of TN =9.0 K. High-temperature susceptibility data for powder samples were fitted to the Curie-Weiss law with θ=-30 K and an effective moment of μeff =5.7 μB, close to what is expected for a free Mn2+ ion. There is small but clear orientation dependence in the susceptibility data for single-crystal samples. The result of isothermal magnetization measured at 2 K is consistent with the interpretation of an antiferromagnetic ground state, and a slope change was seen at a critical field of Hc =18 kG, indicating a field-induced moment reorientation of the Mn2+ ions in this compound.
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U2 - 10.1063/1.2159307
DO - 10.1063/1.2159307
M3 - Article
VL - 99
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 8
M1 - 08J501
ER -