Amorphous material with equal atom mol ratio and preparation method thereof

Abstract

The invention provides an amorphous material with an equal atom mol ratio and a preparation method thereof and belongs to the technical field of preparation of amorphous materials. The amorphous material is prepared from four types of oxide including lanthanum trioxide, titanium dioxide, niobium pentoxide and tungsten oxide and the atom mol ratio is as follows: La accounts for 25 percent, Ti accounts for 25 percent, Nb accounts for 25 percent and W accounts for 25 percent; the preparation method comprises the following steps: 1) mixing the raw materials according to the equal atom mol ratio; drying, pre-firing and carrying out tabletting to prepare a mixed oxide blank; 2) putting the block-shaped blank into a laser suspension furnace and melting a block through laser; then rapidly coolingto room temperature. According to the amorphous material provided by the invention, oxide mixed powder is suspended in the air in a melting, rapid cooling and condensation process and is not in contact with any container; in a cooling process, no heterogeneous nucleation is formed, so that the formation of the amorphous material is facilitated; impurity elements cannot be introduced and the purityof the amorphous material is kept.

Description

technical field [0001] The invention belongs to the technical field of preparation of amorphous materials, and in particular relates to an amorphous material with an atomic equimolar ratio and a preparation method thereof. Background technique [0002] Amorphous has short-range order, long-range disorder, and isotropy. It has many physical, chemical, and electromagnetic properties superior to crystals. It has broad application prospects in information, energy, biology, precision machines, and aerospace. It has attracted extensive attention of researchers at home and abroad. [0003] A liquid substance in a high-energy state will tend to a low-energy stable equilibrium crystalline state as the temperature decreases or the pressure increases. There will be many thermodynamic metastable phases between the liquid state and the crystalline state, including metastable phases of different energy states In the amorphous phase, as the energy gradually decreases, the structure of the...

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Problems solved by technology

[0004] In the prior art, the process of preparing amorphous crystals needs to be heated in a container and then rapidly cooled to form. The cooling process will form heterogeneous nucleation due to contact with the container, which is not conducive to the formation of amorphous crystals and will also affect the final formation. Amorphous properties

In addition, the four oxides of lanthanum trioxide, titanium dioxide, niobium pentoxide, and tungsten oxide do not contain any network structure oxides. In this case, it is difficult to vitrify the sample during conventional melting and solidification.

At present, there are no reports of the four oxides of lanthanum trioxide, titanium dioxide, niobium pentoxide, and tungsten oxide forming amorphous, especially mixed in an equimolar ratio to form an amorphous

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