绝缘材料, 2007, 40(5): 49-52. doi: 10.3969/j.issn.1009-9239.2007.05.015
交联聚乙烯电缆中电树枝的研究现状
马丽婵 1, , 郑晓泉 2, , 谢安生 3, {"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"采用固相合成法制备了(Y0.99R0.01)2 Ti2O7(R=Pr、Tb、Ho、Er、Tm、Yb、Lu)陶瓷,研究了Pr、Tb、Ho、Er、Tm、Yb及Lu掺杂对Y2Ti2O7陶瓷物相组成、烧结性能和微波介电性能的影响.结果表明A位取代能改进其微波介电性能.烧结样品为单相的烧绿石结构,主晶相为Y2Ti2O7.当R=Er,1450℃烧结4h时,(Y0.99Er0.01)2Ti2O7陶瓷的微波介电性能最佳:εr=44.3,Q×f=12021GHz(5.371GHz),τf=+44×10-6/℃,优于Y2Ti2O7陶瓷的介电性能(εr=54,Q×f=6565 GHz,τf=-31×10-6/℃).","authors":[{"authorName":"肖瑗","id":"5fcd15a9-8e90-4684-9e82-bd6b07a56ff8","originalAuthorName":"肖瑗"},{"authorName":"王哲飞","id":"631ff754-296c-4d33-a255-11da9bc4d53d","originalAuthorName":"王哲飞"},{"authorName":"龚志杰","id":"63dc374f-5b83-4a35-a605-aa140d9d41d6","originalAuthorName":"龚志杰"},{"authorName":"王丽熙","id":"196eba1f-f587-4d97-a32d-586f8e3fa5b6","originalAuthorName":"王丽熙"},{"authorName":"张其土","id":"7a60d650-93f9-4e85-bf4b-238fc80708a7","originalAuthorName":"张其土"}],"doi":"","fpage":"762","id":"398cee12-2400-4e86-8f72-f7a6503f9a96","issue":"z4","journal":{"abbrevTitle":"GNCL","coverImgSrc":"journal/img/cover/GNCL.jpg","id":"33","issnPpub":"1001-9731","publisherId":"GNCL","title":"功能材料"},"keywords":[{"id":"2311e2b9-2ae0-4c7d-ba28-e8c41b344274","keyword":"无机非金属材料","originalKeyword":"无机非金属材料"},{"id":"591e813c-4d81-4661-a01d-c0801e0c9682","keyword":"微波介质陶瓷","originalKeyword":"微波介质陶瓷"},{"id":"c0957dbc-5094-46a2-897b-5f0718a7f316","keyword":"Y2Ti2O7","originalKeyword":"Y2Ti2O7"},{"id":"85b3657d-590b-4226-8305-6230676277c9","keyword":"烧绿石结构","originalKeyword":"烧绿石结构"},{"id":"2b30dd1d-82e8-4230-8d82-049a1507db95","keyword":"掺杂","originalKeyword":"掺杂"}],"language":"zh","publisherId":"gncl2011z4048","title":"(Y0.99R0.01)2Ti2O7(R=Pr、Tb、Ho、Er、Tm、Yb、Lu)陶瓷的微波介电性能","volume":"42","year":"2011"},{"abstractinfo":"以表面富载羧基的聚(苯乙烯-丙烯酸酯)(PSA)阴离子乳胶粒为模板制备了PSA乳胶粒/钇盐水解产物/钛盐水解产物复合核壳微球,在空气中一定温度下煅烧后得到550 nm左右的内镶Y2O3的TiO2空心微球.用SEM、TEM、TG-DTG、IR和XRD对样品进行了分析表征.结果表明:当钇盐水解产物包覆量/钛盐水解产物包覆量比值很小时,复合核壳微球煅烧后得到Y2O3/TiO2复合空心微球,当钇盐水解产物包覆量/钛盐水解产物包覆量比值较大时,煅烧复合核壳微球后得到新相Y2Ti2O7,导致球壳大部分破碎成小粒子.","authors":[{"authorName":"韩春蕊","id":"916fe850-3cf6-472a-bcc6-1d8b41892e4d","originalAuthorName":"韩春蕊"},{"authorName":"李兰英","id":"6fa3fdd3-d3e5-4b77-a787-051215cc192f","originalAuthorName":"李兰英"},{"authorName":"张灿英","id":"1da169b7-affb-40e3-80a2-f9fa9683eadb","originalAuthorName":"张灿英"},{"authorName":"古国华","id":"89b09583-2436-4628-b03b-c30d973a9b41","originalAuthorName":"古国华"},{"authorName":"胡正水","id":"eecaffef-c78e-4e75-a8d5-11c0113ac4cc","originalAuthorName":"胡正水"}],"doi":"","fpage":"184","id":"684cd668-7011-4d54-be13-ef2c92d3c3a5","issue":"z1","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"2d461444-4023-497d-92f1-eae6ecda16c7","keyword":"PSA乳胶粒","originalKeyword":"PSA乳胶粒"},{"id":"71826793-d69d-4545-ada4-1eced0dfe393","keyword":"空心微球","originalKeyword":"空心微球"},{"id":"76b153af-907c-4a20-9cb1-84b0470ae31d","keyword":"Y2O3/TiO2","originalKeyword":"Y2O3/TiO2"},{"id":"bd552955-c5de-464a-9965-a74b5098b5fe","keyword":"Y2Ti2O7","originalKeyword":"Y2Ti2O7"}],"language":"zh","publisherId":"xyjsclygc2005z1053","title":"Y2O3/TiO2复合空心微球的制备与表征","volume":"34","year":"2005"},{"abstractinfo":"采用放电等离子烧结(SPS)技术取代传统热等静压工艺,制备出具有超细晶粒的纳米结构9Cr氧化物弥散强化(ODS)钢.利用SEM及阿基米德排水法分析了不同放电烧结温度(900,950,1050℃)对ODS钢组织形貌和致密度的影响;通过HRTEM,STEM-HAADF及EDS分析了SPS-ODS钢的微观组织特征等.结果表明:机械合金化粉末在950℃时SPS效果最好,密度可达理论密度的97.7%;SPS-ODS钢由超细晶粒(≤200 nm)和大晶粒(≥1μm)混合组织构成;基体中弥散分布着高密度纳米尺寸的Y-Ti-O团簇及Y2Ti2O7相,在晶界上存在少量尺寸较大(30~100 nm)的尖晶石结构Mn(Ti)Cr2O4.","authors":[{"authorName":"卢晨阳","id":"22658a8a-e4d6-4c44-b293-673188880325","originalAuthorName":"卢晨阳"},{"authorName":"吕铮","id":"a228a5b0-e06d-4245-8b7c-81caf6467d1e","originalAuthorName":"吕铮"},{"authorName":"余亮","id":"83deae29-5fbb-45b5-b246-e0f99d324569","originalAuthorName":"余亮"},{"authorName":"刘春明","id":"03dc033e-8bf8-4f2f-84a5-a1a4ece06b5e","originalAuthorName":"刘春明"}],"doi":"","fpage":"454","id":"e98197d6-c4a8-47fe-b502-bf8225237cf3","issue":"2","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"ea0b7d5f-e0a3-4196-8d91-3f213c2fcd84","keyword":"放电等离子烧结","originalKeyword":"放电等离子烧结"},{"id":"f0963979-f820-44d3-ae90-fbcf67453184","keyword":"ODS钢","originalKeyword":"ODS钢"},{"id":"d89c36a1-5297-4127-bdb1-d15fae3da4f6","keyword":"Y-Ti-O团簇","originalKeyword":"Y-Ti-O团簇"},{"id":"f0fa3d9b-cff0-4c06-9a3f-ff2d68aafa4b","keyword":"Y2Ti2O7","originalKeyword":"Y2Ti2O7"},{"id":"3f28428f-40ca-4480-a540-1a3fc0b9354a","keyword":"Mn(Ti)Cr2O4","originalKeyword":"Mn(Ti)Cr2O4"}],"language":"zh","publisherId":"xyjsclygc201602037","title":"放电等离子烧结技术制备的纳米结构9Cr-ODS钢及其微观结构分析","volume":"45","year":"2016"},{"abstractinfo":"In this work, the complete matrix of optical spectral levels in trigonal symmetry of 3d(2) (3d(8)) ions are established on basis of strong field coupling mechanism by using two spin-orbit coupling parameters model. The contribution of the spin-orbit coupling of ligand to the optical spectra has been included in these formulas. As an application, the optical spectra of Cr4+ in Y2Ti2O7 and Y2Sn2O7 have been studied by the complete diagonalization (energy matrix) method. The covalent effect has been studied and the difficulty about Dq parameter in explanation of optical spectra of Cr-doped Y2Ti2O7 and Y2Sn2O7 is removed. The theoretical results are in good agreement with observed data. (C) 2012 Elsevier B.V. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"2344","id":"a72d5881-e5e6-499d-9412-7eea0d5f7d39","issue":"12","journal":{"abbrevTitle":"PBM","id":"b1289047-807c-4b57-bffc-a126ac2ffa2a","issnPpub":"0921-4526","publisherId":"PBM","title":"Physica B-Condensed Matter"},"keywords":[{"id":"4f21b6da-07f6-4047-872a-95617d6cc39e","keyword":"Optical spectra;Covalent effect;Two spin-orbit coupling parameters;model;Cr4+;Y2Ti2O7 and Y2Sn2O7;atomic screening constants;tetragonal distortion;scf functions;crystal;epr;pyrochlores;parameters;growth;sites","originalKeyword":"Optical spectra;Covalent effect;Two spin-orbit coupling parameters;model;Cr4+;Y2Ti2O7 and Y2Sn2O7;atomic screening constants;tetragonal distortion;scf functions;crystal;epr;pyrochlores;parameters;growth;sites"}],"language":"en","publisherId":"0921-4526_2012_12_1","title":"Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7","volume":"407","year":"2012"},{"abstractinfo":"
对球磨不同时间的雾化合金粉采用热等静压烧结方法制备9Cr-ODS钢. 利用高能同步辐射小角X射线散射(SAXS), 配合高分辨透射电镜(HRTEM), 高角环形暗场(HAADF)像和电子背散射衍射(EBSD)研究了不同球磨时间合金粉制备的9Cr-ODS钢中纳米析出相的特征及其对组织和性能的影响. SAXS和TEM实验结果表明, 9Cr-ODS钢中富Y-Ti-O纳米团簇的尺寸随着球磨时间的延长不断下降, 分布密度峰值逐渐升高, 球磨20 h样品中富Y-Ti-O纳米团簇的分布密度峰值达到2.93×1023 m-3; 烧绿石结构Y2Ti2O7相的分布密度峰值在球磨8 h样品中最高(1.03×1022 m-3); 少量大尺寸富Ti, Al和O的析出相的分布密度随着球磨时间延长而增加, 出现核壳结构. 晶粒尺寸随着球磨时间的延长而细化, 屈服强度随着球磨时间的延长而升高. 富Y-Ti-O纳米析出相对材料强度的贡献占主导地位.
","authors":[{"authorName":"谢锐","id":"e48970fc-163c-4afe-a589-ab8eeced16f6","originalAuthorName":"谢锐"},{"authorName":"吕铮","id":"9355bd37-d7d3-4c15-9746-a5669c3ad7ba","originalAuthorName":"吕铮"},{"authorName":"卢晨阳","id":"1bf27e74-7ec1-4d65-a16f-01f835617e53","originalAuthorName":"卢晨阳"},{"authorName":"李正元","id":"422e385c-e36a-435c-9c31-9dcc43529397","originalAuthorName":"李正元"},{"authorName":"丁学勇","id":"8cb9d343-1500-4132-81a2-98955ab6278d","originalAuthorName":"丁学勇"},{"authorName":"刘春明","id":"20a83f63-5a96-4bce-bfd0-49dcfa143d37","originalAuthorName":"刘春明"}],"categoryName":"Orginal Article","doi":"10.11900/0412.1961.2016.00164","fpage":"1053","id":"007abb9e-f639-49db-8e82-a7da917c5586","issue":"9","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"f7a06868-2b38-4b14-bded-d2355de3fc99","keyword":"9Cr-ODS钢","originalKeyword":"9Cr-ODS钢"},{"id":"16994193-5093-4cbc-906f-18b20ad5d38e","keyword":"金属气雾化","originalKeyword":"金属气雾化"},{"id":"e8cb6348-87f9-4254-9597-e1a83b863839","keyword":"小角X射线散射(SAXS)","originalKeyword":"小角X射线散射(SAXS)"},{"id":"a8e3a409-0922-4f6e-8e65-f563f8392e7d","keyword":"富Y-Ti-O纳米团簇","originalKeyword":"富Y-Ti-O纳米团簇"},{"id":"d2dde867-bcca-43b8-8f02-63fb7178ff03","keyword":"Y2Ti2O7","originalKeyword":"Y2Ti2O7"},{"id":"35b68d7b-0bad-41dd-a0fa-2c5043dc3045","keyword":"屈服强度","originalKeyword":"屈服强度"}],"language":"zh","publisherId":"C20160164","title":"9Cr-ODS钢中纳米析出相的SAXS和TEM研究*","volume":"52","year":"2016"},{"abstractinfo":"对球磨不同时间的雾化合金粉采用热等静压烧结方法制备9Cr-ODS钢.利用高能同步辐射小角X射线散射(SAXS),配合高分辨透射电镜(HRTEM),高角环形暗场(HAADF)像和电子背散射衍射(EBSD)研究了不同球磨时间合金粉制备的9Cr-ODS钢中纳米析出相的特征及其对组织和性能的影响.SAXS和TEM实验结果表明,9Cr-ODS钢中富Y-Ti-O纳米团簇的尺寸随着球磨时间的延长不断下降,分布密度峰值逐渐升高,球磨20 h样品中富Y-Ti-O纳米团簇的分布密度峰值达到2.93×1023m-3;烧绿石结构Y2Ti2O7相的分布密度峰值在球磨8h样品中最高(1.03×1022m-3);少量大尺寸富Ti,A1和O的析出相的分布密度随着球磨时间延长而增加,出现核壳结构.晶粒尺寸随着球磨时间的延长而细化,屈服强度随着球磨时间的延长而升高.富Y-Ti-O纳米析出相对材料强度的贡献占主导地位.","authors":[{"authorName":"谢锐","id":"8c2b37f6-50f8-47e1-895f-b68c5d741c35","originalAuthorName":"谢锐"},{"authorName":"吕铮","id":"a4d34453-4005-433a-9a07-78673f788b30","originalAuthorName":"吕铮"},{"authorName":"卢晨阳","id":"b2c296e6-a903-4fc6-8f2d-25d0039dcedb","originalAuthorName":"卢晨阳"},{"authorName":"李正元","id":"203622a7-56f5-4197-a3f5-cfbdae1f5b69","originalAuthorName":"李正元"},{"authorName":"丁学勇","id":"59414a3b-7afd-4d7e-a5f8-8341d497a438","originalAuthorName":"丁学勇"},{"authorName":"刘春明","id":"6776fdfb-8578-40e0-9657-d0288afcc5ea","originalAuthorName":"刘春明"}],"doi":"10.11900/0412.1961.2016.00164","fpage":"1053","id":"43d4ecdf-029c-4da8-b9f2-698e1fa7edcf","issue":"9","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"bfe762f5-5c77-431a-ba5e-168d4a97731f","keyword":"9Cr-ODS钢","originalKeyword":"9Cr-ODS钢"},{"id":"ecdb3fca-612f-4026-a27c-376dbbe90ffb","keyword":"金属气雾化","originalKeyword":"金属气雾化"},{"id":"de0fa4d9-51a2-4b89-8152-26fd7895066d","keyword":"小角X射线散射(SAXS)","originalKeyword":"小角X射线散射(SAXS)"},{"id":"ce15354f-4456-49a7-b886-102e474902c0","keyword":"富Y-Ti-O纳米团簇","originalKeyword":"富Y-Ti-O纳米团簇"},{"id":"68ede01f-2a30-4ba5-98e2-8d544490aea9","keyword":"Y2Ti2O7","originalKeyword":"Y2Ti2O7"},{"id":"063c486f-d6b7-47df-bc29-3699f188abda","keyword":"屈服强度","originalKeyword":"屈服强度"}],"language":"zh","publisherId":"jsxb201609004","title":"9Cr-ODS钢中纳米析出相的SAXS和TEM研究","volume":"52","year":"2016"},{"abstractinfo":"研究了CrO3、Nb2O5、SiO2及Al2O3对 Y2Ti2O7 陶瓷的烧结性能、相组成和微波介电性能的影响. 其中Nb2O5 掺杂能够降低 Y2Ti2O7 陶瓷材料的烧结温度, 提高基体陶瓷的介电常数和品质因子,引起谐振频率温度系数的明显变化. 且随着Nb2O5含量的增多,所有样品的主晶相仍为立方烧绿石型Y2Ti2O7,Nb5+可能进入烧绿石结构中, 部分取代Ti4+所在位置.实验结果表明:1mol%Nb2O5掺杂的陶瓷材料在 1420℃ 下烧结致密,具有最佳的微波介电性能: ε r =61.8, Q× f =9096GHz (f=5.494GHz), τf =54×10 - 6 /℃.","authors":[{"authorName":"丁佳钰","id":"96de9b1e-72ab-4dee-b5fd-b71011c3b9c2","originalAuthorName":"丁佳钰"},{"authorName":"肖瑗","id":"f71d3bef-de43-4a47-8437-a160058753ab","originalAuthorName":"肖瑗"},{"authorName":"王哲飞","id":"9cd8b271-a01f-4afe-9f73-136e5615fbce","originalAuthorName":"王哲飞"},{"authorName":"王丽熙","id":"f343b1c4-65f7-4d5e-9d9a-5ddce7982bf1","originalAuthorName":"王丽熙"},{"authorName":"张其土","id":"8ec76e45-d3dd-4b31-8192-122b2121faa9","originalAuthorName":"张其土"}],"categoryName":"|","doi":"10.3724/SP.J.1077.2010.10563","fpage":"327","id":"70566c23-64a4-4bd6-a0ee-c0fe31daec9c","issue":"3","journal":{"abbrevTitle":"WJCLXB","coverImgSrc":"journal/img/cover/WJCLXB.jpg","id":"62","issnPpub":"1000-324X","publisherId":"WJCLXB","title":"无机材料学报"},"keywords":[{"id":"3fa850a2-679a-4e0c-b63e-8456fcd515ec","keyword":"陶瓷","originalKeyword":"陶瓷"},{"id":"4cf216d7-3e8d-4dfd-9835-14fc4f2433ea","keyword":" crystal growth","originalKeyword":" crystal growth"},{"id":"01435c13-4aa2-401e-8319-b25f2a52b80e","keyword":"X-ray diffraction","originalKeyword":"X-ray diffraction"},{"id":"6e52aeda-d03e-4a10-a588-3d1d1e2787c3","keyword":"dielectric properties","originalKeyword":"dielectric properties"},{"id":"79fba6b4-38fd-4e7a-95d5-aa302d67b491","keyword":"modification","originalKeyword":"modification"}],"language":"zh","publisherId":"1000-324X_2011_3_13","title":"添加剂对Y2Ti2O7陶瓷的微波介电性能的影响","volume":"26","year":"2011"},{"abstractinfo":"研究了CrO3、Nb2O5、SiO2及A12O3对Y2Ti2O7陶瓷的烧结性能、相组成和微波介电性能的影响.其中Nb2O5掺杂能够降低Y2Ti2O7陶瓷材料的烧结温度,提高基体陶瓷的介电常数和品质因子,引起谐振频率温度系数的明显变化.且随着Nb2O5含量的增多,所有样品的主晶相仍为立方烧绿石型Y2Ti2O7,Nb5+可能进入烧绿石结构中,部分取代Ti4+所在位置.实验结果表明:1mol%Nb2O5掺杂的陶瓷材料在1420℃下烧结致密,具有最佳的微波介电性能:εr=61.8,Q×f9096GHz (f=5.494GHz),τf=54× 10-6/℃.","authors":[{"authorName":"丁佳钰","id":"c7fdc1e0-d846-42f2-9ee6-e4750378c886","originalAuthorName":"丁佳钰"},{"authorName":"肖瑗","id":"461e32ce-1534-4603-8507-ceaca1c68873","originalAuthorName":"肖瑗"},{"authorName":"王哲飞","id":"b4addcae-5b3f-4ab3-9572-f380e78c9b5b","originalAuthorName":"王哲飞"},{"authorName":"王丽熙","id":"61e75fa2-361b-4946-8c49-e014eca95e24","originalAuthorName":"王丽熙"},{"authorName":"张其土","id":"d3d3c269-1fd4-4187-b3c1-d8674f799f56","originalAuthorName":"张其土"}],"doi":"10.3724/SP.J.1077.2010.10563","fpage":"327","id":"51a7c7bf-366a-48c4-8295-5dc077248aa7","issue":"3","journal":{"abbrevTitle":"WJCLXB","coverImgSrc":"journal/img/cover/WJCLXB.jpg","id":"62","issnPpub":"1000-324X","publisherId":"WJCLXB","title":"无机材料学报"},"keywords":[{"id":"715c7bc3-0022-4e4e-8639-e30f5a37e009","keyword":"陶瓷","originalKeyword":"陶瓷"},{"id":"072bbf95-6bab-4148-ab2d-b08789eaa568","keyword":"晶体生长","originalKeyword":"晶体生长"},{"id":"ce0b3894-f0e5-4ac0-b5fe-97061e987c4b","keyword":"X射线衍射","originalKeyword":"X射线衍射"},{"id":"719f8fd7-692e-4d61-9fea-5a2ffc5bb342","keyword":"介电性能","originalKeyword":"介电性能"},{"id":"5486a13b-947f-4881-b8b4-03cbeec939dd","keyword":"改性","originalKeyword":"改性"}],"language":"zh","publisherId":"wjclxb201103021","title":"添加剂对Y2Ti2O7陶瓷的微波介电性能的影响","volume":"26","year":"2011"},{"abstractinfo":"以新型的具有中介电常数的Y2Ti2O7系微波介质陶瓷为研究基体,选用PbTiO3为改性添加剂,采用X射线衍射仪、扫描电子显微镜、网络分析仪和阻抗分析仪等现代测试仪器对材料的性能进行了表征,重点研究了PbTiO3掺杂后陶瓷材料的物相组成和介电性能.结果表明:PbTiO3掺杂没有改变材料的主晶相,仍为A2B2O7型烧绿石结构,由此推测PbTiO3可能固溶到Y2Ti2O7陶瓷晶格中.Pb2+占据Y3+所在的A位,且同时产生新的空位缺陷,破坏了材料的有序度,提高了晶格扩散速率,有效降低了陶瓷的烧结温度.少量Pb元素的加入使材料的晶胞常数增大,单位晶胞体积变大,Ti4+具有更大的运动空间,提高了材料本身的离子总极化率,从而提高材料的介电性能,尤其是介电常数值.当PbTiO3掺杂量为2%时,在1345℃下烧结,介电性能较好:εT=56.4,tanδ=1.21×10-3,Q×f=4776GHz.","authors":[{"authorName":"丁佳钰","id":"4c699cde-3e6b-4e61-a969-d93b56e35a5c","originalAuthorName":"丁佳钰"},{"authorName":"肖瑗","id":"9de9819e-8d59-430f-bd64-40752b7c9db5","originalAuthorName":"肖瑗"},{"authorName":"张其土","id":"4d3e7593-59fb-4767-96df-2c7e064c8929","originalAuthorName":"张其土"}],"doi":"10.3969/j.issn.0258-7076.2010.06.017","fpage":"875","id":"29be9df1-c305-42d9-ad68-ae45c40e6ac8","issue":"6","journal":{"abbrevTitle":"XYJS","coverImgSrc":"journal/img/cover/XYJS.jpg","id":"67","issnPpub":"0258-7076","publisherId":"XYJS","title":"稀有金属"},"keywords":[{"id":"a508ed16-b5f3-4738-927f-dd04456bea6f","keyword":"微波介质陶瓷","originalKeyword":"微波介质陶瓷"},{"id":"88c69435-1126-4b27-84dd-3042bcc135f7","keyword":"钛酸铅","originalKeyword":"钛酸铅"},{"id":"0588ecd5-2646-4ab4-b284-f1474237df91","keyword":"烧绿石结构","originalKeyword":"烧绿石结构"},{"id":"30743f7c-13cc-4861-9a75-43c6717b5df5","keyword":"掺杂","originalKeyword":"掺杂"}],"language":"zh","publisherId":"xyjs201006017","title":"钛酸铅掺杂的Y2Ti2O7基微波介质陶瓷的性能研究","volume":"34","year":"2010"},{"abstractinfo":"The optical band positions and spin-Hamiltonian parameters (g factors g(parallel to) g(perpendicular to) and zero-field splitting D) for the trigonal Cr3+ centers in Y2Ti2O7 crystal are calculated from the complete diagonalization (of energy matrix) method based on the two-spin-orbit-parameter model. In the calculations, the contributions to spectral data from both the spin-orbit parameter of central d(n) ion and that of ligand ion are considered and the crystal field parameters used are estimated from the superposition model. The calculated results are in reasonable agreement with the experimental values. The defect structures of Cr3+ center is suggested. (C) 2012 Elsevier B.V. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"3881","id":"8209fd10-cd43-49fb-94df-52177f7ab7d8","issue":"18","journal":{"abbrevTitle":"PBM","id":"b1289047-807c-4b57-bffc-a126ac2ffa2a","issnPpub":"0921-4526","publisherId":"PBM","title":"Physica B-Condensed Matter"},"keywords":[{"id":"17ad2b53-db9b-475d-91ad-e2cda90a95f2","keyword":"Electron paramagnetic resonance (EPR);Defect structure;Crystal- and;ligand-field theory;Y2Ti2O7;Cr3+;electron-paramagnetic-resonance;atomic screening constants;rare-earth;temperature-dependence;single-crystals;scf functions;jahn-teller;field;epr;distortions","originalKeyword":"Electron paramagnetic resonance (EPR);Defect structure;Crystal- and;ligand-field theory;Y2Ti2O7;Cr3+;electron-paramagnetic-resonance;atomic screening constants;rare-earth;temperature-dependence;single-crystals;scf functions;jahn-teller;field;epr;distortions"}],"language":"en","publisherId":"0921-4526_2012_18_1","title":"Theoretical calculations of the optical band positions and spin-Hamiltonian parameters for Cr3+ ions in Y2Ti2O7 crystal","volume":"407","year":"2012"}],"totalpage":9328,"totalrecord":93280}