pyrochlore相关论文
21-Component compositionally complex ceramics:Discovery of ultrahigh-entropy weberite and fergusonit
Two new high-entropy ceramics(HECs)in the weberite and fergusonite structures,along with the unexpected formation of ord......
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Soot particulates from diesel engine,one of the important sources for the frequent hazeweather in China,have caused seri......
PEG-assisted Hydrothermal Synthesis of Pyrochlore Nanocrystals for Catalytic Combustion of Soot Part
Nanocrystalline Nd2Sn2O7 with a phase-pure pyrochlore structure were successfully prepared by polyethylene glycol (PEG)-......
Self-propagating High-temperature Synthesis of Sm and Zr Co-doped Gd2Ti2O7 Pyrochlore Ceramics as Nu
We reported a rapid synthesis of Sm3+/Zr4+ co-doped Gd2Ti2O7 pyrochlore simulated nuclear wastes solidification by self-......
Rare earth oxides doped hafnia ceramics,with a formula of Hf0.76LnxY0.24-xO1.88 (Ln =Gd,Yb,Gd + Yb or La + Yb),were prep......
Various excellent properties of rare earth zirconate and stannate pyrochlores are close related with their native point ......
Polycrystalline samples of La2Zr2O7 pyrochlore are irradiated by different energetic heavy ions to investigate the depen......
The Chemistry of Niobium Mineralisation at Bayan Obo,Inner Mongolia,China:Constraints on the Hydroth
As well as world class Fe and REE resources the Bayan Obo mineral deposits also hosts significant niobium resources (est......
High-entropy pyrochlore-type structures based on rare-earth zirconates are successfully produced by conventional solid-s......
通过在二次合成法过程中适当过量乙酸镍的方法,成功制备了不含焦绿石相的0.66Pb(Ni1/3 Nb2/3) O3-0.34PbTiO3纯钙钛矿相弛豫铁电陶......
In this paper, the dilution effects of non-magnetic Y ions on spin-ice compound Dy2Ti2O7 by infrared and Raman spectra a......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
采用溶胶-凝胶法合成Ln2Sn2O7∶Er3+ (In =La,Gd,Y)纳米晶.通过X射线衍射和场发射扫描电子显微镜测试了样品的晶体结构和形貌,同时......
Pyrochlore titanate oxides, R2Ti2O7(R=Gd3+, Tb3+, Dy3+), were synthesized under mild hydrothermal conditions. The crysta......
实验研究了掺杂对钼基焦绿石结构的Sm2-xSrxMo2O7（0．2≤x≤0．6）的磁性质和热性质的影响．实验结果表明，Sm2-xSrxMo2O7（0．2≤x≤0．6）依然具有铁......
The cubic pyrochlore Dy2Pt2O7 was synthesized under 4 GPa and 1000℃ and its magnetic and thermodynamic properties were ......
研究了（Bi2--xZnx）（Ti2--xNbx）O7（0．4≤x≤1．0）陶瓷材料的结构与介电性能。X-射线衍射结果表明，该组分体系在950～1100℃烧结，可得到单相立方焦......
研究了La3+取代的(Bi1.5Zn0.5)(Ti1.5Nb0.5)O7基陶瓷(Bi1.5-xLaxZn0.5)(Ti1.5Nb0.5)O7(0.0≤x≤1.2,BLZNT)的结构与介电性能.采用......
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制备了焦绿石P<sub>x</sub>N<sub>y</sub>,用DTA、XRD、SEM研究了P<sub>x</sub>N<sub>y</sub>的合成,烧结条件及显微结构.P<sub>x<......
借助XRD,SEM,HP4140B微电流计和HP4274A阻抗分析仪等测试手段,研究实验制备的BCZN[(Bi1.5Ca0.5)(Zn0.5Nb1.5)O7]陶瓷试样介电性能,......
为了探索模拟三价锕系核素在Gd2Zr2O7基材中的快速固化方法,按照化学计量关系Gd 2-x Nd xZr2O7（x=0.42和x=0.86）设计配方,以Gd2O3,Zr......
以La2Zr2O7为固化基材,Nd为锕系核素模拟核素,通过溶胶凝胶法制备了（La1-yNdy）2Zr2O7（0≤y≤1.0）系列烧绿石模拟固化体。样品经过高能......
在三元系单斜焦绿石相微波介质陶瓷Bi2（Zn1/3Ta2/3）2O7（简称β-BZT）中添加不同量的CuO,研究其对材料的结构和介电性能的影响.研究发现,......
本文利用电子探针对新疆拜城碱性花岗岩中的烧绿石进行了研究。通过背散射图像分析可知拜城碱性花岗岩中烧绿石多为不规则粒状,颗......
为研究241 Am在La2Zr2O7烧绿石中的固化行为及其对烧绿石晶体结构稳定性的影响,实验选用Nd作为241 Am的模拟物,采用Sol-喷雾热解法......
为了探索Gd2Ti1.3Zr0.7O7烧绿石快速固化高放废物中锕系核素的方法,采用Sm模拟三价锕系核素,以氧化铜为氧化剂、钛粉为还原剂,氧化......
用溶胶凝胶-浸渍法在900℃煅烧3 h后制备了烧绿石逆负载型催化剂Ce O2/La2Sn1.7Co0.3O7-δ,并用于甲烷催化燃烧反应,显示出较好的......
含铅弛豫铁电材料中焦绿石相的存在是影响材料性能的重要因素,也是制造工艺中遇到的难题之一。本文以Pb(Zn_(1/3)Nb_(2/3))O_3(PZN......
研究了原料混合球磨研磨时, 加入表面活性剂对Bi2O3-ZnO-Nb2O5(BZN)系复相区陶瓷的相组成及性能的影响. 依据最佳的(Bi3xZn2-3x)(Z......
ＰＺＮ基陶瓷在烧结过程中都要经历由焦绿石相朝钙钛矿相的转变。ＰＺＮ基陶瓷中钙钛矿相含量的多少与添加剂的种类及数量密切相关，本工作根据化......
通过溶胶-凝胶法合成了La-Zr-O和Ni-La-Zr-O体系催化剂,采用XRD,BET和TPR技术对其物理化学性质进行了表征,以CO2重整CH4制合成气反......
本文对不同衬底材料上ＰＺＴ铁电体材料钙钛矿相的形成，及其相变温度与结构的关系进行了研究。结果表明：ＰＺＴ膜的相变结构除受衬底影响外，在由非......
采用溶胶-凝胶法制备了两种富铀烧绿石型人造岩石。借助XRD、SEM、BES/EDS分析手段，对所制备的固化体进行了物相结构、显微形貌及元......
研究了Ｂｉ２Ｏ３－ＺｎＯ－Ｎｂ２Ｏ５三元系统中焦绿石立方结构。根据焦绿石结晶化学原理，对该系统中的焦绿石立方结构提出了多种假设通式，考虑了不同的阳离子分布......
研究了瓷料与内电极浆料的共烧工艺中，内电极浆料对Ｂｉ２ｏ３－ＺｎＯ－Ｎｂ２Ｏ５资瓷料相组成的影响。ＸＲＤ分析表明，Ｂｉ２Ｏ３－ＺｎＯ－Ｚｂ２Ｏ５瓷料是焦绿石立方α相与低对称β相构成的复相体系......
研究了银钯内电极对Ｂｉ２Ｏ３－ＺｎＯ－Ｎｂ２Ｏ５（ＢＺＮ）基多层陶瓷电容器（ＭＬＣ）的显微结构的影响及对ＢＺＮ复相陶瓷中立方焦绿石（α相）的影响，利用扫描电镜观察晶粒的大小与形貌，利用......
Ｐｂ（Ｂ１、Ｂ２）Ｏ３型弛豫铁电材料由于其优异的介电性能而日益受到关注，但是，由于烧录石相的存在，很难获得纯钙钛矿相的Ｐｂ（Ｂ１Ｂ２）Ｏ３材料，因而笃这类材料的研究及其......
