Layered magnetoelectric composite material with high Curie temperature and high magnetoelectric coupling performance and preparation method of layered magnetoelectric composite material
A magnetoelectric composite material and electric coupling technology, applied in the field of material science, can solve the problems of low magnetoelectric voltage coefficient and uneven dispersion
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Embodiment 1
[0050] The chemical formula of layered magnetoelectric composites is: (1-x)Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 / xCo 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 , where x is Co 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 The mass percentage of , and x = 0.1.
[0051] The preparation method of the above-mentioned layered magnetoelectric composite material comprises the following steps:
[0052] (1) According to the chemical formula Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Analytical pure K 2 CO 3 、Na 2 CO 3 , Li 2 CO 3 and Nb 2 o 5 After the preparation, it was mixed uniformly by ball milling for 20 hours, then dried, sieved, and briquetted, and then pre-fired at 840°C for 3 hours to obtain a block product, and then the block product was crushed and passed through a 120-mesh sieve to obtain Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Powder;
[0053] (2) According to the chemical formula Co 0.6 Zn0.4 Fe 1.7 mn 0.3 o 4 will analyze pure Co 3 o 4 , ZnO, MnO 2 and Fe 2 o ...
Embodiment 2
[0065] The chemical formula of layered magnetoelectric composites is: (1-x)Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 / xCo 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 , where x is Co 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 The mass percentage of , and x = 0.2.
[0066] The preparation method of the above-mentioned layered magnetoelectric composite material comprises the following steps:
[0067] (1) According to the chemical formula Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Analytical pure K 2 CO 3 、Na 2 CO 3 , Li 2 CO 3 and Nb 2 o 5 After the preparation, it was mixed evenly by ball milling for 21 hours, then dried, sieved, briquetting, and then pre-fired at 845°C for 3.5 hours to obtain a block product, and then the block product was crushed and passed through a 120-mesh sieve to obtain Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Powder;
[0068] (2) According to the chemical formula Co 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 will analyze pure Co 3 o 4 , ZnO, MnO 2 and Fe 2 o 3 ...
Embodiment 3
[0080] The chemical formula of layered magnetoelectric composites is: (1-x)Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 / xCo 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 , where x is Co 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 The mass percentage of x=0.3.
[0081] The preparation method of the above-mentioned layered magnetoelectric composite material comprises the following steps:
[0082] (1) According to the chemical formula Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Analytical pure K 2 CO 3 、Na 2 CO 3 , Li 2 CO 3 and Nb 2 o 5 After preparation, it was mixed uniformly by ball milling for 22 hours, then dried, sieved, briquetting, and then pre-fired at 850°C for 4 hours to obtain a block product, and then the block product was crushed and passed through a 120-mesh sieve to obtain Li 0.058 (Na 0.535 K 0.48 ) 0.942 NbO 3 Powder;
[0083] (2) According to the chemical formula Co 0.6 Zn 0.4 Fe 1.7 mn 0.3 o 4 will analyze pure Co 3 o 4 , ZnO, MnO 2 and Fe 2 o 3 After the p...
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