Evidence for a frustrated square lattice with ferromagnetic nearest-neighbor interaction in the new compound Pb2VO(PO4)2
2004; Elsevier BV; Volume: 272-276; Linguagem: Inglês
10.1016/j.jmmm.2003.12.002
ISSN1873-4766
AutoresE. E. Kaul, H. Rösner, Nic Shannon, R.V. Shpanchenko, C. Geibel,
Tópico(s)Glass properties and applications
ResumoWe present the magnetic susceptibility of a new frustrated square lattice system, Pb2VO(PO4)2, and compare it with that measured on our new samples of Li2VOSiO4 and Li2VOGeO4, the only known examples of such magnetic lattice. The analysis of the data using high-temperature series expansion gives a ferromagnetic nearest-neighbor exchange J1≃−6K and an antiferromagnetic next-nearest-neighbor exchange J2≃9.8K for Pb2VO(PO4)2.
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