The aim of high-field high-frequency ESR facility is to study the spin dynamics, magnetic excitations and magnetic anisotropy (e.g., zero-field splitting) in low-dimensional quantum spin systems and nanosized molecule magnets in various magnetic fields and temperatures.

Compatible Magnets

·30 T pulsed magnet

Bore size ~28mm, pulsed duration~25 ms, sample temperature 2-40 K

Available Equipment

·Backward wave oscillator (QS1-370): f=210-370 GHz (1-10 mW)

·Backward wave oscillator (QS1-260-520): f=155-260 GHz (100mW); f-310-520 GHz (3mW)

·Gunn oscillators: f= 54, 60, 70, 77, 85, 90, 100 GHz

·QMC detector: (1) The ULN95 Preamplifier; (2) Type QFI/X Hot Electron Bolometer (InSb) for 60 to 500 GHz

Related publications

1 Y. F. Deng, T. Han, Z. X. Wang, Z. W. Ouyang, B. Yin, Z. P. Zheng, J. Krzystek, and Y. Z. Zheng, “Uniaxial magnetic anisotropy of square-planar chromium(II) complexes revealed by magnetic and HF-EPR studies”, Chem. Commun. 51, 17688 (2015).

2 L. Chen, H. H. Cui, S. E. Stavretis, S. C. Hunter, Y. Q. Zhang, X. T. Chen, Y. C. Sun, Z. X. Wang, Y. Song, A. A. Podlesnyak, Z. W. Ouyang, and Z. L. Xue, “Slow Magnetic Relaxations in Cobalt(II) Tetranitrate Complexes. Studies of Magnetic. Anisotropy by Inelastic Neutron Scattering and High-Frequency and High-Field EPR Spectroscopy”, Inorg. Chem. 55, 12603 (2016).

3 Y.M. Guo, Z.W. Ouyang, M.Y. Ruan, J.J. Cheng, Y.C. Sun, Z.C. Xia, and G.H. Rao, "Antiferromagnetic ordering in spin-chain multiferroic Gd₂BaNiO₅ studied by electronic spin resonance”, J. Appl. Phys. 117, 223902 (2015).

4 M.Y. Ruan, Z.W. Ouyang, Y.M. Guo, J.J. Cheng, Y.C. Sun, Z.C. Xia, G.H. Rao, S. Okubo, and H. Ohta, "Disappearance of Ising nature in Ca₃ZnMnO₆ studied by high-field ESR”, J. Phys.: Condens. Matter 26, 236001 (2014).

Staff contact

Zhongwen Ouyang, Zhengxin Wang