{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"用固相反应法制备了二元掺杂系列La2/3(CaxBa1-x)1/3MnO3(x=0,0.40,0.45,0.55,0.60,1.0)多晶材料;在77 K～420 K范围内测量了样品的电阻和磁电阻.结果表明,所制备的系列样品电阻率与温度的关系具有明显的双电阻峰结构;在T=77 K～350 K范围内,样品均有相似的磁电阻行为:在低温区(T＜Tc,,Tc为居里温度),磁电阻(MR)随T的下降几乎线性增加,在此区域采用用自旋极化电子隧道效应和局域化模型较好地解释了电阻和磁电阻行为.在较低温度(77 K～100 K)都有较大的MR值,这与单晶材料和薄膜材料的MR行为完全不同,这一差异是由于晶界效应所致;在Tc附近,样品都出现了磁电阻峰.在T＞Tc区域,电阻率、磁电阻都随温度的升高而迅速下降,样品在高温(Tc附近及T＞Tc区域)的这一行为可用双交换(DE)模型与非磁无序来说明.通过掺杂研究发现,掺杂量x为0.55,0.60的2种样品在室温下具有较大的磁电阻,在B=1.2 T时分别达到14.5%和19.5%.","authors":[{"authorName":"<span style=\"color:red\">陈</span>水源","id":"308e9e27-1cb4-4aef-9fd2-39899b57262e","originalAuthorName":"陈水源"},{"authorName":"赖恒","id":"612e81bb-9989-4f75-9b32-8f362cba4a59","originalAuthorName":"赖恒"},{"authorName":"肖艳","id":"765ed4c8-a38e-45ce-ad31-76cee37d329e","originalAuthorName":"肖艳"},{"authorName":"<span style=\"color:red\">陈</span><span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"8620fc29-a85f-4d1f-a07d-b6580ebf3c22","originalAuthorName":"陈志高"},{"authorName":"冯倩","id":"ab46f886-f199-4c41-a81d-690a03c8997f","originalAuthorName":"冯倩"},{"authorName":"黄<span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"75701713-d08a-4c32-9bfb-dbb808b52d1e","originalAuthorName":"黄志高"}],"doi":"","fpage":"615","id":"0fca8907-d810-4bb1-9f74-a00c5f65e274","issue":"8","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":"21bc7336-d7a4-4211-a832-ae3e1d779c92","keyword":"磁电阻","originalKeyword":"磁电阻"},{"id":"cafe0026-7987-4f45-b162-734da36f8e91","keyword":"电阻","originalKeyword":"电阻"},{"id":"7338ea44-b99f-4982-804e-78473b8b7ee7","keyword":"隧道效应","originalKeyword":"隧道效应"},{"id":"dbacde39-62d7-42b0-a728-08866e975f39","keyword":"晶界效应","originalKeyword":"晶界效应"},{"id":"daf5848a-64b4-4092-ac62-e2cf9e33b621","keyword":"非磁无序","originalKeyword":"非磁无序"}],"language":"zh","publisherId":"xyjsclygc200308009","title":"二元掺杂系列La-(Ca,Ba)-Mn-O材料巨磁电阻特性研究","volume":"32","year":"2003"},{"abstractinfo":"用固相反应烧结法制备了多晶体材料La2/3Ca1/3MnO3(LCMO),La2/3(Ca0.5Ba0.5)1/3MnO3(LCBMO)、La2/3Ba1/3MnO3(LBMO),La2/3(Sr0.5Ba0.5)1/3MnO3(LSBMO)和La2/3Sr1/3MnO3(LSMO),测量了它们在77 K～800 K的电阻和磁电阻特性.实验发现,通过一定的工艺技术制备出的CMR材料有强烈的相界效应,在低温下有大的磁电阻,且在Tc附近存在明显的从金属态向半导体态的转变;用自旋极化电子隧道效应和靠近居里点逾渗模型较好地解释了电阻和磁电阻行为;用非绝热小极化子跃迁模型对高温的电阻特性进行拟合处理,得到了激活能;同时发现退火处理对样品的电阻率有重要的影响.","authors":[{"authorName":"<span style=\"color:red\">陈</span><span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"0b256a92-419e-41da-915b-0b0b2efbdbfa","originalAuthorName":"陈志高"},{"authorName":"<span style=\"color:red\">陈</span>水源","id":"f857ae21-91ce-4e98-b841-08ffeee60da0","originalAuthorName":"陈水源"},{"authorName":"黄<span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"e4b10897-85b4-4016-ba4e-795c52f32ef3","originalAuthorName":"黄志高"},{"authorName":"赖恒","id":"5cd587d1-8cba-41d1-a355-429c5bff38b3","originalAuthorName":"赖恒"},{"authorName":"都有为","id":"7f384573-e625-4f53-aff5-e5392fcc0a7a","originalAuthorName":"都有为"}],"doi":"","fpage":"1023","id":"17106fa6-bc48-49ef-bfe9-dd2ad207c657","issue":"10","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":"6f500d45-c448-4b9f-a710-71ef7ba76450","keyword":"磁电阻","originalKeyword":"磁电阻"},{"id":"ddb39d18-2efd-42e2-af43-bc06d67f945f","keyword":"输运特性","originalKeyword":"输运特性"},{"id":"6690ae5b-21d1-48c3-997e-e80b54981ed5","keyword":"稀土","originalKeyword":"稀土"},{"id":"1f3c4a91-b9e8-41d3-a715-6c5768233328","keyword":"非绝热小极化子跃迁","originalKeyword":"非绝热小极化子跃迁"}],"language":"zh","publisherId":"xyjsclygc200410004","title":"La-(Ca-Ba-Sr)-Mn-O锰氧化物高低温输运特性","volume":"33","year":"2004"},{"abstractinfo":"用固相反应法制备了La2/3(CaxBa1-x)1/3MnO3(x=0.00,0.40,0.45,0.55,0.60,1.00)六种多晶CMR材料,并测量了在77K～350K范围内零磁场和0.4T外磁场下的电阻率.这些样品都出现了双电阻峰结构,采用Mott转变表达式ρ～exp(T0/T)1/4拟合了实验数据,结果表明高温峰的转变是绝缘体-金属(I-M)转变,而低温峰不是I-M转变峰,用自旋极化电子隧道效应和局域化模型解释了电阻和磁电阻行为.此外,在x=0.4～0.6掺杂范围内样品呈现出异常的电阻行为.","authors":[{"authorName":"赖恒","id":"4f63d5ec-2685-4808-a8aa-6b31a0726aa0","originalAuthorName":"赖恒"},{"authorName":"<span style=\"color:red\">陈</span>水源","id":"bce7e78c-e684-4801-8cfc-ed28ccd5f833","originalAuthorName":"陈水源"},{"authorName":"<span style=\"color:red\">陈</span><span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"35e8b7db-2926-4eb6-a537-928600c55dba","originalAuthorName":"陈志高"},{"authorName":"李永森","id":"bc335bf7-b814-4e4a-b556-ba74c26dfb6d","originalAuthorName":"李永森"},{"authorName":"黄<span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"ff7e9632-5454-41fd-80f4-07387739f296","originalAuthorName":"黄志高"}],"doi":"10.3969/j.issn.1004-0277.2003.02.012","fpage":"45","id":"73842f48-d015-47db-8731-a85542012d6d","issue":"2","journal":{"abbrevTitle":"XT","coverImgSrc":"journal/img/cover/XT.jpg","id":"65","issnPpub":"1004-0277","publisherId":"XT","title":"稀土"},"keywords":[{"id":"480b5586-1da0-4031-b1db-4f10b31c2388","keyword":"电阻","originalKeyword":"电阻"},{"id":"c80b346e-b029-46e1-9100-f5ee335e49fc","keyword":"掺杂I-M转变","originalKeyword":"掺杂I-M转变"},{"id":"3a9c514d-a148-41b0-ad63-0a344eaa5eb2","keyword":"晶界效应","originalKeyword":"晶界效应"},{"id":"2c672949-9ca6-444b-b12e-d1a98f276f6d","keyword":"非磁无序","originalKeyword":"非磁无序"}],"language":"zh","publisherId":"xitu200302012","title":"La2/3(CaXBa1-X)1/3MnO3材料的绝缘体-金属转变与晶界效应","volume":"24","year":"2003"},{"abstractinfo":"理论上对ZnO能带的计算一般采用局域密度近似(LDA),而该方法得到的带隙结果却被严重的低估了.在本文中,我们在密度泛函理论的LDA近似的框架下,通过第一性原理GW近似(GWA)对ZnO的能带进行了修正.在LDA和GWA计算中,将Zn3d电子作为价电子,LDA结果表明ZnO是一种直接带隙半导体,同时讨论了LDA和GWA计算得到的能带之间的差异.","authors":[{"authorName":"郑勇平","id":"b6a8c5ce-2ad6-4dcc-8987-05e23e3940f6","originalAuthorName":"郑勇平"},{"authorName":"<span style=\"color:red\">陈</span><span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"14738de9-87a4-4d2f-a767-102e64359d3d","originalAuthorName":"陈志高"},{"authorName":"卢宇","id":"c8469378-a785-4399-8edf-6ebd2f9cff12","originalAuthorName":"卢宇"},{"authorName":"黄<span style=\"color:red\">志</span><span style=\"color:red\">高</span>","id":"55ed5d91-2745-40e7-b0ad-e0a812151d84","originalAuthorName":"黄志高"}],"doi":"10.3969/j.issn.1007-4252.2009.03.014","fpage":"285","id":"8cfa29d6-0715-41f7-9e35-0249aef4af4b","issue":"3","journal":{"abbrevTitle":"GNCLYQJXB","coverImgSrc":"journal/img/cover/GNCLYQJXB.jpg","id":"34","issnPpub":"1007-4252","publisherId":"GNCLYQJXB","title":"功能材料与器件学报   "},"keywords":[{"id":"8b630cc6-5205-4d77-95a3-eec4fd5fa8d0","keyword":"ZnO","originalKeyword":"ZnO"},{"id":"20f45962-9504-4f95-a6f9-9b5118d87c6f","keyword":"准粒子能带结构","originalKeyword":"准粒子能带结构"},{"id":"c6214c57-1f6e-4392-ac64-912a50675638","keyword":"GW","originalKeyword":"GW"},{"id":"3d9a145c-7640-4fdb-bb72-38b7914a5d7d","keyword":"第一性原理","originalKeyword":"第一性原理"}],"language":"zh","publisherId":"gnclyqjxb200903014","title":"纤锌矿结构ZnO的准粒子能带结构","volume":"15","year":"2009"},{"abstractinfo":"根据电化学原理, 得到<span style=\"color:red\">高</span>阻值衬层穿透性裂纹的电沉积电流与时间的关系曲线, 利用计算机数据采集及处理系统, 对<span style=\"color:red\">高</span>阻值衬层进行分析与检测, 由此可以定量确定裂纹的大小, 再通过观测在裂纹处所沉积的金属（或采用电极扫描技术）来确定裂纹的位置及表面形状, 最终可以实现对<span style=\"color:red\">高</span>阻值衬层的快速无损探伤.","authors":[{"authorName":"郭<span style=\"color:red\">志</span>猛","id":"a59895a1-e4a8-4a35-a331-9748f7c5978a","originalAuthorName":"郭志猛"},{"authorName":"庄奋强","id":"d8cd23d4-33dd-4328-a00d-72b9a514f2fb","originalAuthorName":"庄奋强"},{"authorName":"林涛","id":"b5f727f0-0703-4ff1-b13c-2745dba602f5","originalAuthorName":"林涛"},{"authorName":"吴峰松","id":"ba35ec5c-8dad-4a09-b74d-d7b0570a72b3","originalAuthorName":"吴峰松"},{"authorName":"殷声","id":"646d55f6-70b4-4352-88ac-c1e271dba40a","originalAuthorName":"殷声"}],"categoryName":"|","doi":"","fpage":"124","id":"e5e5e0ed-8166-4f8a-b28e-d665b6d67a6f","issue":"2","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"65638d24-a49c-4c62-bf5d-fc361122209b","keyword":"<span style=\"color:red\">高</span>阻值衬层","originalKeyword":"高阻值衬层"},{"id":"48e71879-91d1-4f48-953e-71210906e540","keyword":"null","originalKeyword":"null"},{"id":"7b4996f6-ca76-4816-9879-97c3dd341e49","keyword":"null","originalKeyword":"null"},{"id":"4e24337c-4431-4601-96bf-b869291af036","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_1999_2_20","title":"郭<span style=\"color:red\">志</span>猛 庄奋强","volume":"35","year":"1999"},{"abstractinfo":"以能量为1.5 MeV/u，剂量分别为500，750，1000，1250，1500 Gy的电子束对1，2，4，6，8年等5种年份浓香型白酒进行辐照处理；扫描各酒样200～400 nm波段的紫外光谱，根据紫外光谱图的差异，计算了280～300 nm波段的光谱曲线相似度，分析光谱曲线变化规律。结果表明，对于前4种白酒，对照样与辐照样光谱曲线相似度值越小，催<span style=\"color:red\">陈</span>效果越好；白酒存放时间越久，酒体风格转向老熟所需剂量越小，越容易达到最佳催<span style=\"color:red\">陈</span>效果；对于8年白酒，辐照剂量超过750 Gy后，白酒体系动态平衡被打破，各单体物质增加，出现返生现象。因此，电子束辐照技术对低年份浓香型白酒催<span style=\"color:red\">陈</span>效果显著，是一种先进、高效的催<span style=\"color:red\">陈</span>方法。","authors":[{"authorName":"张苗苗","id":"16f2bee9-e276-4f55-95b1-9e627a4ac276","originalAuthorName":"张苗苗"},{"authorName":"陆栋","id":"6bd2c6ff-fa0f-4deb-9553-bfa0e40d3ab7","originalAuthorName":"陆栋"},{"authorName":"曹国珍","id":"ad44f083-8f23-4d8d-a41c-b6321e181155","originalAuthorName":"曹国珍"},{"authorName":"刘敬","id":"980de600-54b3-4c10-b2b1-7d36c88bd704","originalAuthorName":"刘敬"},{"authorName":"金文杰","id":"9d97782b-4400-438f-aa1a-efaa2ae74455","originalAuthorName":"金文杰"},{"authorName":"王菊芳","id":"7a171c96-4419-441c-8118-cabb35cc1b2c","originalAuthorName":"王菊芳"},{"authorName":"李文建","id":"db0225a5-b939-440c-a47d-2daa37f339b7","originalAuthorName":"李文建"}],"doi":"10.11804/NuclPhysRev.31.02.218","fpage":"218","id":"be399f10-d5ab-444a-9853-693337e4845a","issue":"2","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论   "},"keywords":[{"id":"d27824cd-9a7d-40d6-ade5-08e57f3651e9","keyword":"白酒","originalKeyword":"白酒"},{"id":"a87d8a5f-52c5-438d-9818-ac05aa030ecd","keyword":"电子束","originalKeyword":"电子束"},{"id":"59b3d998-0774-4358-b00a-6ad942d1d4f2","keyword":"紫外可见光谱","originalKeyword":"紫外可见光谱"},{"id":"7662c117-7566-4173-b784-d5cf69060062","keyword":"光谱曲线相似度","originalKeyword":"光谱曲线相似度"},{"id":"ef90b8b5-c334-453a-8346-0f1341f1e34b","keyword":"催<span style=\"color:red\">陈</span>效果","originalKeyword":"催陈效果"}],"language":"zh","publisherId":"yzhwlpl201402017","title":"电子束辐照浓香型白酒催<span style=\"color:red\">陈</span>效果的研究","volume":"","year":"2014"},{"abstractinfo":"通过光片鉴定和电子探针分析,总结了内蒙古赤峰<span style=\"color:red\">陈</span>家杖子金矿床的矿石矿物组成,结构构造,划分了成矿期次.研究表明:矿床中矿石成分较复杂,硫化物种类多,有少量硫盐矿物出现;富硫贫砷毒砂、贫砷富硫黄铁矿、贫锌富铁的闪锌矿(与标准分子式相比),含杂质多的银锑黝铜矿和方铅矿与金关系密切;多金属硫化物阶段是该矿床的主要成矿阶段,其中第二世代富硫贫砷毒砂是<span style=\"color:red\">陈</span>家杖子金矿的最主要载金矿物,其次是方铅矿.结合流体包裹体测试和研究,确定该矿床为受大型角砾岩筒构造控制的低硫化型浅成低温热液矿床,该矿床深部有很大的找矿潜力.","authors":[{"authorName":"霍亮","id":"aa8459a3-b8df-471f-beb6-c0820f947fb7","originalAuthorName":"霍亮"},{"authorName":"李碧乐","id":"0542a65f-639d-436f-9395-33a31da28fa5","originalAuthorName":"李碧乐"},{"authorName":"黄勇","id":"c3eb9700-f7a0-4640-951f-31133483900c","originalAuthorName":"黄勇"},{"authorName":"王力","id":"74c22902-9e7c-40f8-8cad-6d663cf193da","originalAuthorName":"王力"}],"doi":"10.3969/j.issn.1001-1277.2007.10.002","fpage":"4","id":"d9d6227a-88ea-4727-89c6-a72289a7a8f9","issue":"10","journal":{"abbrevTitle":"HJ","coverImgSrc":"journal/img/cover/HJ.jpg","id":"44","issnPpub":"1001-1277","publisherId":"HJ","title":"黄金"},"keywords":[{"id":"342763a1-a09a-4924-a3cd-d93fd15d2580","keyword":"矿石矿物特征","originalKeyword":"矿石矿物特征"},{"id":"5ed5d2c9-7efa-4ac6-91b8-a288a651641c","keyword":"矿床成因","originalKeyword":"矿床成因"},{"id":"196f3b92-1f65-4e1d-a829-9ab98bb8b116","keyword":"<span style=\"color:red\">陈</span>家杖子金矿床","originalKeyword":"陈家杖子金矿床"}],"language":"zh","publisherId":"huangj200710002","title":"内蒙古赤峰<span style=\"color:red\">陈</span>家杖子金矿床矿物学特征及成因","volume":"28","year":"2007"},{"abstractinfo":"","authors":[],"doi":"","fpage":"46","id":"b10481d8-9fcb-4ee7-8505-4f79d8427c8a","issue":"4","journal":{"abbrevTitle":"JXGCCL","coverImgSrc":"journal/img/cover/JXGCCL.jpg","id":"45","issnPpub":"1000-3738","publisherId":"JXGCCL","title":"机械工程材料"},"keywords":[{"id":"710c4de7-f7cc-4461-8c11-e77989cb348b","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"jxgccl200104016","title":"沉痛悼念<span style=\"color:red\">陈</span>南平教授","volume":"25","year":"2001"},{"abstractinfo":"","authors":[{"authorName":"胡包钢","id":"8303dfbd-7cee-49e7-8a35-d4094812e08c","originalAuthorName":"胡包钢"}],"doi":"10.3969/j.issn.1000-6826.2013.01.022","fpage":"80","id":"581e3c9f-7d6a-4ed1-8fc2-71bd2e460d6d","issue":"1","journal":{"abbrevTitle":"JSSJ","coverImgSrc":"journal/img/cover/3abe017a-2574-4821-8152-4ae974ef0471.jpg","id":"47","issnPpub":"1000-6826","publisherId":"JSSJ","title":"金属世界"},"keywords":[{"id":"d8c3d45d-172d-4c0d-b45b-c643cc9a574c","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"jssj201301023","title":"师者风范——怀念恩师<span style=\"color:red\">陈</span>先霖先生","volume":"","year":"2013"},{"abstractinfo":"","authors":[{"authorName":"周靖云","id":"c5ef4367-7cd7-4aa9-aa40-9bab250065bc","originalAuthorName":"周靖云"}],"doi":"10.3969/j.issn.1000-6826.2016.03.01","fpage":"1","id":"95c0f114-43b3-449a-ac4a-7739fd3afbf0","issue":"3","journal":{"abbrevTitle":"JSSJ","coverImgSrc":"journal/img/cover/3abe017a-2574-4821-8152-4ae974ef0471.jpg","id":"47","issnPpub":"1000-6826","publisherId":"JSSJ","title":"金属世界"},"keywords":[{"id":"eee2c540-c4dc-4020-9235-f907fd167d4d","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"jssj201603001","title":"喜看稻菽千重浪,教书育人石<span style=\"color:red\">志</span>国","volume":"","year":"2016"}],"totalpage":2234,"totalrecord":22336}