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Method for regulating and controlling ferroelectric property of underfilled strontium barium niobate material by doping ions with different radiuses
The invention belongs to the technical field of ceramic material modification, and particularly relates to a method for regulating and controlling ferroelectric properties of an unfilled strontium barium niobate (SBN) material by doping ions with different radiuses. According to the method, the characteristic that 1/6 A sites (including A1 and A2 sites) and all C sites in an SBN structure lattice are not occupied is utilized, and a proper amount of alkali metal ions Li < + >, Na < + > and K < + > are introduced to fill the unoccupied lattice points, so that the ferroelectric property is regulated and controlled. Because the alkali metal ions have different radiuses, the alkali metal ions can occupy different lattice points, and the different occupied positions lead to different regulation and control effects on the ferroelectric property of the SBN by doping of Li < + >, Na < + > and K < + > ions. The Li < + > ion doping enhances the relaxor ferroelectric property of the SBN, the Na < + > ion doping obviously enhances the normal ferroelectric property of the SBN, and the K < + > ion doping enhances the normal ferroelectric property of the SBN to a certain extent.
本发明属于陶瓷材料改性技术领域，具体涉及一种通过掺杂不同半径离子调控未充满型铌酸锶钡(SBN)材料铁电性质的方法。该方法利用SBN结构点阵中1/6的A位(包括A1和A2位)和所有C位未被占据这一特征，引入适量的碱金属离子Li+、Na+、K+来填充这些未占据格点，从而实现对铁电性质的调控。由于这些碱金属离子具有不同半径，它们能够占据的格点是不同的，这种不同的占据位置导致Li+、Na+、K+离子掺杂对SBN的铁电性质具有不同的调控作用：实验结果表明，Li+离子掺杂增强了SBN的弛豫铁电体性质、Na+离子掺杂显著增强了SBN的正常铁电体性质、而K+离子掺杂则有限度地增强了SBN的正常铁电体性质。
Method for regulating and controlling ferroelectric property of underfilled strontium barium niobate material by doping ions with different radiuses
The invention belongs to the technical field of ceramic material modification, and particularly relates to a method for regulating and controlling ferroelectric properties of an unfilled strontium barium niobate (SBN) material by doping ions with different radiuses. According to the method, the characteristic that 1/6 A sites (including A1 and A2 sites) and all C sites in an SBN structure lattice are not occupied is utilized, and a proper amount of alkali metal ions Li < + >, Na < + > and K < + > are introduced to fill the unoccupied lattice points, so that the ferroelectric property is regulated and controlled. Because the alkali metal ions have different radiuses, the alkali metal ions can occupy different lattice points, and the different occupied positions lead to different regulation and control effects on the ferroelectric property of the SBN by doping of Li < + >, Na < + > and K < + > ions. The Li < + > ion doping enhances the relaxor ferroelectric property of the SBN, the Na < + > ion doping obviously enhances the normal ferroelectric property of the SBN, and the K < + > ion doping enhances the normal ferroelectric property of the SBN to a certain extent.
本发明属于陶瓷材料改性技术领域，具体涉及一种通过掺杂不同半径离子调控未充满型铌酸锶钡(SBN)材料铁电性质的方法。该方法利用SBN结构点阵中1/6的A位(包括A1和A2位)和所有C位未被占据这一特征，引入适量的碱金属离子Li+、Na+、K+来填充这些未占据格点，从而实现对铁电性质的调控。由于这些碱金属离子具有不同半径，它们能够占据的格点是不同的，这种不同的占据位置导致Li+、Na+、K+离子掺杂对SBN的铁电性质具有不同的调控作用：实验结果表明，Li+离子掺杂增强了SBN的弛豫铁电体性质、Na+离子掺杂显著增强了SBN的正常铁电体性质、而K+离子掺杂则有限度地增强了SBN的正常铁电体性质。
Method for regulating and controlling ferroelectric property of underfilled strontium barium niobate material by doping ions with different radiuses
一种通过掺杂不同半径离子调控未充满型铌酸锶钡材料铁电性质的方法
ZHANG SHANTAO (author) / GUO JIAN (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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