A method for preparing lanthanum calcium manganese oxide nanoparticle ribbon array

Abstract

The invention discloses a method for preparing an LCMO nano particle belt array, and belongs to the technical field of nanomaterial preparation. A large length-to-diameter ratio LCMO nano sol-gel particle belt array can be obtained through the matching of negative-pressure suction filtration and the middle-lower voltage DC preferential electro-deposition growing process, and then a quick-drying gel isothermal treatment technology is conducted on the large length-to-diameter ratio LCMO nano sol-gel particle belt array to obtain the large length-to-diameter ratio LCMO nano particle belt array. By the adoption of the technology, the technical limitation that only a low-order length-to-diameter ratio LCMO nano array can be prepared in the prior art is broken through, and meanwhile a good referential technological means is provided for solving the problem about how to efficiently increase the length-to-diameter ratio of nano array materials. The magnetic property expressive force of the LCMO nano array as a micro-nano physics basic research object is enriched, and meanwhile the structure foundation and property foundation of the LCMO nano array as a magnetic device are widened.

Description

technical field [0001] The invention relates to a method for preparing a ribbon array of lanthanum calcium manganese oxide nanoparticles, and belongs to the technical field of preparing perovskite giant magnetoresistance nano arrays. Background technique [0002] Anodized aluminum templates are currently one of the most widely used hard templates, and the most widely used is the preparation or synthesis of nanomaterials. The anodized aluminum template not only has good space confinement ability, but also has a stable structure and can withstand high temperature, high pressure and strong acid and alkali environment. Its most important structural feature is that it has a large aspect ratio, which can ensure that the prepared nano-array material also has a large aspect ratio feature, which can further strengthen the quantum effect at the nanoscale. For example, one-dimensional nano-film materials can only be used in The thickness reaches the nanometer level, and the dimensions...

AI Technical Summary

Problems solved by technology

Its most important structural feature is that it has a large aspect ratio, which can ensure that the prepared nano-array material also has a large aspect ratio feature, which can further strengthen the quantum effect at the nanoscale. For example, one-dimensional nano-film materials can only be used in The thickness reaches the nanometer level, and the dimensions in other directions are not at the micro-nano level, while the quantum dot materials are all at the nanometer level in three-dimensional dimensions, and there is no aspect ratio. Only in two-dimensional nanomaterials such as nanowires, nanotubes, and nanorods There is an aspect ratio relationship in the equal shape, the diameter of the lateral dimension is nanometer level, and the length of the longitudinal dimension is micronano level. The performance of nanomaterials can be enhanced by increasing the aspect ratio. At present, lanthanum calcium manganese oxide nanoarrays are prepared. Most of the research focuses on the preparation of arrays of nanowires and nanotubes, because the limitation of the template's own structure can only completely depend on its own aspect ratio structural properties, because the limitation of the growth conditions of the template will cause the aspect ratio to be unable to be further expanded, which is very Not conducive to the preparation of nanoarrays with large aspect ratio

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