Experimental Evidence for Jahn-Teller Transition in a Fe(II)Fe(III) Bimetallic Oxalate

• Authors: G. Tang , Y. He , F. Xu , Q. Zhang
• Languages of publication: EN

Abstracts

EN

Bimetallic oxalate {[N-(n-C_4H_9)_4][FeFe(C_2O_4)_3]}_{n} has been investigated by the Mössbauer spectroscopy. The Mössbauer studies confirm that high-spin Fe(III) (S=5/2) and Fe(II) (S=2) ions are present in the compound. These spectra above 60 K consist of three quadrupole doublets, indicating that there are three different Fe sites in the material. The Mössbauer results reveal that spontaneous magnetization of Fe(II) sublattices increases more steeply than that of Fe(III) sublattices as the temperature decreases from T_{C}. Great increase of quadrupole splitting at 50 K provides compelling evidence for the predicted Jahn-Teller transition.

Keywords

EN

75.50.Xx; 76.80.+y

Discipline

• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 75.50.Xx: Molecular magnets

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 1
• Pages: 118-120

Dates

published

2013-01

received

2012-03-13

(unknown)

2012-10-03

Contributors

author

G. Tang

• Department of Materials Science and Engineering, Nanjing University of Science and Technology Nanjing 210094, China
• College of Physics and Technology, Guangxi Normal University, Guilin 541004, China

author

Y. He

• College of Physics and Technology, Guangxi Normal University, Guilin 541004, China

author

F. Xu

• Department of Materials Science and Engineering, Nanjing University of Science and Technology Nanjing 210094, China

author

Q. Zhang

• College of Physics and Technology, Guangxi Normal University, Guilin 541004, China

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Identifiers

DOI

10.12693/APhysPolA.123.118