A high temperature spin glass ca 3 comno 6 preparation method

Abstract

The invention discloses a method for preparing high-temperature spin glass Ca3CoMnO6. The method includes dissolving citric acid in distilled water, adding CaCO3, C4H6CoO4-4H2O and C4H6MnO4-4H2O intothe distilled water and uniformly stirring and mixing the citric acid, the CaCO3, the C4H6CoO4-4H2O, the C4H6MnO4-4H2O and the distilled water with one another to obtain mixed solution; adding nitricacid into the mixed solution to regulate the pH (potential of hydrogen) of the mixed solution until the pH reaches 3-4; adding ethylene glycol into solution to enhance the viscosity of the solution, magnetically stirring the ethylene glycol and the solution under room-temperature conditions for 2 hours and sufficiently mixing the ethylene glycol and the solution with each other; heating solution in a water-bath kettle at the temperature of 95-100 DEG C until the solution is in the shape of jelly so as to obtain wet gel; drying the wet gel in a constant-temperature drying tank at the temperature of 150-170 DEG C to obtain dried gel; sufficiently grinding, pre-burning, secondarily grinding and sintering the dried gel to obtain the high-temperature spin glass Ca3CoMnO6. The method has the advantages that crystals of the high-temperature spin glass Ca3CoMnO6 are of single-phase orthorhombic structures, particles of samples have uniform sizes, and obvious spin glass characteristics are presented at the high temperatures; processes for preparing the high-temperature spin glass Ca3CoMnO6 are simple and are low in cost, and the high-temperature spin glass Ca3CoMnO6 can be prepared and produced by the aid of the method on a large scale.

Description

technical field [0001] The invention belongs to the technical field of multiferroic ceramic materials and magnetic materials, in particular to a high-temperature spin glass Ca 3 CoMnO 6 method of preparation. Background technique [0002] Multiferroic materials refer to materials that have two or more ferroic orders at the same time. The development of multiferroic materials enables the regulation of multiple properties in one material at the same time. Especially magnetoelectric multiferroic materials, because they have ferromagnetism and ferroelectricity at the same time, the coupling between ferromagnetism and ferroelectric order not only has important applications in the miniaturization of devices, but also provides the possibility of multi-state storage of data. . For example, the current data storage is mostly magnetic storage, and its storage status only has two states of +M and -M, so the current computers are all binary storage. When multiferroic materials are ...

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