https://doi.org/10.1140/epjp/i2016-16343-8
Regular Article
Breaking of 1D magnetism in a spin-1 chain antiferromagnet Ni2V2O7: ESR and first-principles studies
1
Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074, Wuhan, China
2
School of Physics, Huazhong University of Science and Technology, 430074, Wuhan, China
3
School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China
* e-mail: zwouyang@mail.hust.edu.cn
Received:
27
June
2016
Accepted:
9
September
2016
Published online:
30
September
2016
We report the breaking of one-dimensional (1D) magnetism in a spin-1 chain antiferromagnet Ni2V2O7. First, basic structure and magnetization data are presented, showing that the compound is ordered at 
K and a field-induced spin-flop transition occurs at 
T. Second, high-field electronic spin resonance (ESR) data demonstrate antiferromagnetic (AFM) resonance modes below T
N, which can be well understood by conventional AFM resonance theory with uniaxial anisotropy. Third, the first-principles calculations based on density function theory reveal a much larger interchain AFM interaction than the intrachain couplings. Combining with all these results, we can see that Ni2V2O7 is not a 1D antiferromagnet, although it is a skew chain from the viewpoint of crystallographic structure.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2016
