Magnetic phase diagram of ZnCr2xGa2-2xO4 spinels: an antiferromagnetic frustrated lattice

D Fiorani; S Viticoli; J L Dormann; J L Tholence; J Hammann; A P Murani; J L Soubeyroux

doi:10.1088/0022-3719/16/16/019

Journal of Physics C: Solid State Physics

Magnetic phase diagram of ZnCr_2xGa_2-2xO₄ spinels: an antiferromagnetic frustrated lattice

D Fiorani¹, S Viticoli¹, J L Dormann¹, J L Tholence¹, J Hammann¹, A P Murani¹ and J L Soubeyroux¹

Published under licence by IOP Publishing Ltd
Journal of Physics C: Solid State Physics, Volume 16, Number 16 Citation D Fiorani et al 1983 J. Phys. C: Solid State Phys. 16 3175 DOI 10.1088/0022-3719/16/16/019

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¹ Istituto di Teorica, CNR, Rome, Italy

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Abstract

The magnetic phase diagram of the system ZnCr_2xGa_2-2xO₄ has been experimentally determined by using low-field DC and AC susceptibility measurements, neutron diffraction experiments and Mossbauer spectroscopy. A spin glass behaviour has been found in the concentration range 0.40<or=x<0.85; this behaviour is a result of the frustration inherent in the octahedral spinel sublattice with antiferromagnetic interactions only.

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