The invention relates to a
nanocomposite phase-change material, a preparation method and an application thereof in a phase-change memory, wherein the
nanocomposite phase-change material comprises a phase-change material GeTe with a
molar percentage of 70-99% and a medium material HfO2 with a
molar percentage of 1-30%. The phase-change material GeTe and the medium material HfO2 are uniformly compounded in a nanoscale, so that the
crystallization of the phase-change material is suppressed, the
thermal stability of the material is enhanced and the data keeping capacity of the material is improved on one hand, and the valid
programming volume is reduced due to the participation of the medium material so as to reduce the
volume change before and after the
crystallization of phase-change unit and decrease the RESET current on the other hand; therefore, the operation stability and the realization of low
power consumption of storage apparatus are promoted. In a word, the novel
nanocomposite phase-change material is applied to a memory, and is capable of decreasing the RESET
voltage of a phase-change storage apparatus and reducing the
programming volume, which is beneficial to realizing high-density storage, increasing the
heating efficiency of the phase-change memory during
programming process, decreasing the
power consumption, enhancing data keeping capacity, and the like.