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Preparation method of multiferroic YFeO3 nano-fiber

A technology of nanofibers and yttrium ferrite, which is applied in the field of nanomaterials and can solve the problems of nanofiber research and reports that have not yet been discovered

Inactive Publication Date: 2015-11-25
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Up to now, no relevant preparation of YFeO by electrospinning method has been found. 3 Related research on nanofibers has been reported

Method used

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Embodiment 1

[0024] The preparation method of the present embodiment multiferroic yttrium ferrite nanofiber comprises the following steps:

[0025] Step 1, preparation of spinning solution: take by weighing 1.818g of analytically pure iron nitrate Fe (NO 3 ) 3 9H 2 O and 1.7235g of analytically pure yttrium nitrate Y (NO 3 ) 3 ·6H 2 O (that is, the molar ratio of the two is 1:1) was added to 30g of DMF solvent, stirred with a magnetic stirrer for 1h to fully dissolve ferric nitrate and yttrium nitrate, then added 2.28g of PVP, and then continued to stir with a magnetic stirrer for 4h at a constant temperature. Realize thorough mixing, obtain spinning solution; The relative molecular mass Mr of described PVP=1.3×10 6 ;

[0026] Step 2, electrospinning: use the electrospinning apparatus with the receiving device as the drum to perform electrospinning on the spinning liquid, the specific process is: put the syringe with a 0.7mm diameter stainless steel needle on the bracket, adjust the ...

Embodiment 2

[0033] The preparation method of the present embodiment multiferroic yttrium ferrite nanofiber comprises the following steps:

[0034] Step 1, preparation of spinning solution: take by weighing 1.818g of analytically pure iron nitrate Fe (NO 3 ) 3 9H 2 O and 1.7235g of analytically pure yttrium nitrate Y (NO 3 ) 3 ·6H 2 O (that is, the molar ratio of the two is 1:1), was added to 25g of DMF solvent, stirred with a magnetic stirrer for 1h to fully dissolve ferric nitrate and yttrium nitrate, then added 2.4g of PVP, and then continued to stir with a magnetic stirrer for 4h To achieve thorough mixing to obtain spinning solution; the relative molecular mass Mr of the PVP=1.3×10 6 ;

[0035] Step 2, electrospinning: use the electrospinning apparatus with the receiving device as the drum to perform electrospinning on the spinning liquid, the specific process is: put the syringe with a 0.7mm diameter stainless steel needle on the bracket, adjust the receiving device The distan...

Embodiment 3

[0039] The preparation method of the present embodiment multiferroic yttrium ferrite nanofiber comprises the following steps:

[0040] Step 1, preparation of spinning solution: take by weighing 2.02g of analytically pure iron nitrate Fe(NO 3 ) 3 9H 2 O and 1.915g of analytically pure yttrium nitrate Y (NO 3 ) 3 ·6H 2 O (that is, the molar ratio of the two is 1:1), was added to 25.5g of DMF solvent, stirred with a magnetic stirrer for 1h to fully dissolve the ferric nitrate and yttrium nitrate, then added 1.9g of PVP, and then continued to stir at a constant temperature with a magnetic stirrer 4h to realize thorough mixing to obtain spinning solution; the relative molecular mass Mr=1.3×10 of the PVP 6 ;

[0041] Step 2, electrospinning: use the electrospinning apparatus with the receiving device as the drum to perform electrospinning on the spinning liquid, the specific process is: put the syringe with a 0.7mm diameter stainless steel needle on the bracket, adjust the rec...

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Abstract

The invention provides a preparation method of multiferroic YFeO3 nano-fiber. The preparation method is characterized in that ferric nitrate, yttrium nitrate, polyvinylpyrrolidone and N,N-dimethyl formamide are uniformly mixed, a spinning solution is prepared, then an electrostatic spinning instrument is used for performing electrostatic spinning on the spinning solution, precursor fiber is obtained after the spinning solution is dried, then the precursor fiber is sintered, and the multiferroic YFeO3 nano-fiber is obtained. The YFeO3 nano-fiber prepared with the preparation method has a hexagonal crystal structure similar to that of YMnO3 and shows a new physical property, namely ferroelectricity, accordingly, the YFeO3 nano-fiber prepared with the method has ferroelectricity and ferromagnetism simultaneously, is a novel multiferroic material and can be applied to fields such as multi-state storage devices, double-read-write internal storage devices and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of multiferroic yttrium ferrite nanofibers. Background technique [0002] ABOs 3 Transition metal-based rare earth composite oxides are an important class of perovskite-structured compounds. Because of their excellent physical and chemical properties, they have been widely used in solid fuel cells, sensors, solid electrolytes, high-temperature heating materials, and the oxidation-reduction of alternative noble metals. Catalysts and many other fields. In particular, its rich optical, magnetic, and electrical properties and excellent physical effects, such as the giant magnetoresistance effect and multiferroicity, have become one of the current research hotspots in the field of functional materials and spintronics. It has broad application prospects in many fields such as sensors, and is an extremely important functional material. [0003] ...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/10D01D1/02D01D5/00B82Y30/00
Inventor 张润兰刘向荣蔡江涛张亚婷熊善新赵顺省
Owner XIAN UNIV OF SCI & TECH
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