Magnetic Field Induced Phase Transition in Spinel GeNi2O4

Abstract

Cubic spinel GeNi2O4 exhibits intriguing magnetic properties with two successive antiferromagnetic phase transitions (TN1 12.1 and TN2 11.4 K) with the absence of any structural transition. We have performed detailed heat capacity and magnetic measurements in different crystallographic orientations. A new magnetic phase in presence of magnetic field (H > 4 T) along the [111] direction is revealed, which is not observed when the magnetic field is applied along the [100] and [110] directions. High field neutron powder diffraction measurements confirm such a change in magnetic phase, which could be ascribed to a spin reorientation in the presence of magnetic field. A strong magnetic anisotropy and competing magnetic interactions play a crucial role on the complex magnetic behavior in this cubic system.

Accepted in PRB

References in corpus (7)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Local spin resonance and spin-Peierls-like phase transition in a geometrically frustrated antiferromagnet
• Statics and dynamics of an incommensurate spin order in a geometrically frustrated antiferromagnet CdCr${}_2$O${}_4$
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• Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons

Cited by in corpus (2)

• Stabilization of high-pressure GeCu${}_2$O${}_4$ spinel cuprate with quasi-1D $S=1/2$ chains in the epitaxial thin-film form
• Epitaxial stabilization of thin films of the frustrated Ge-based spinels