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Magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Ag</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi mathvariant="normal">V</mml:mi><mml:mi mathvariant="normal">O</mml:mi><mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:mrow></mml:math>: An unexpected spin dimer system
Magnetic properties of the silver vanadium phosphate ${\mathrm{Ag}}_{2}\mathrm{V}\mathrm{O}{\mathrm{P}}_{2}{\mathrm{O}}_{7}$ are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting one-dimensional or two-dimensional magnetic behavior, this compound can be understood as a spin dimer system. The fit of the magnetic susceptibility indicates …