Liquid gallium alloy and preparation method thereof

The invention discloses a liquid gallium alloy and a preparation method of the alloy. The liquid gallium alloy comprises the following components in percentage by weight: 60-75% of gallium, 10-25% of indium, 1-11% of tin, and 1-8% of zinc. The preparation method of the liquid gallium alloy comprises the following steps: firstly weighing gallium, indium, tin and zinc according to the mass percent of each component, heating gallium to 29 DEG C to melt, and stopping heating; pouring the liquid gallium into a stainless steel container, and pouring indium, tin and zinc into the stainless steel container too; at normal temperature, using a stainless steel made spoon to mix and stir the metals uniformly until the four raw materials are totally dissolved to be liquid, and finishing the preparation of the liquid gallium alloy. The liquid gallium alloy can be taken as a working medium for power generation of a liquid-metal magnetic fluid generator.