{"id":82861,"date":"2017-05-26T14:00:00","date_gmt":"2017-05-26T06:00:00","guid":{"rendered":"\/\/m.iemloyee.com\/?p=82861"},"modified":"2017-08-04T19:25:23","modified_gmt":"2017-08-04T11:25:23","slug":"nature%e5%ad%90%e5%88%8a%ef%bc%9a%e9%80%9a%e8%bf%87%e8%ae%be%e8%ae%a1%e8%82%96%e7%89%b9%e5%9f%ba%e5%8a%bf%e5%9e%92%e5%ae%9e%e7%8e%b0%e9%87%91%e5%b1%9e%e9%93%81%e7%94%b5%e5%8d%8a%e5%af%bc%e4%bd%93","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=82861","title":{"rendered":"Nature\u5b50\u520a\uff1a\u901a\u8fc7\u8bbe\u8ba1\u8096\u7279\u57fa\u52bf\u5792\u5b9e\u73b0\u91d1\u5c5e\/\u94c1\u7535\/\u534a\u5bfc\u4f53\u96a7\u9053\u7ed3\u7684\u8d85\u5927\u96a7\u7a7f\u7535\u963b"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

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\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u6765\u81ea\u9752\u5c9b\u5927\u5b66\u6e29\u5ce5\u548c\u5357\u4eac\u5927\u5b66\u5434\u8fea\uff08\u5171\u540c\u901a\u8baf\uff09<\/strong>\u5bf9Pt\/BaTiO3<\/sub>\/Nb:SrTiO3<\/sub>\u91d1\u5c5e\/\u94c1\u7535\/\u534a\u5bfc\u4f53\u96a7\u9053\u7ed3\u8fdb\u884c\u4e86\u7cfb\u7edf\u7814\u7a76\uff0c\u5236\u5907\u51fa\u4e86\u6027\u80fd\u5341\u5206\u4f18\u5f02\u7684\u96a7\u9053\u7ed3\uff0c\u5927\u5927\u63a8\u52a8\u4e86\u94c1\u7535\u5b58\u50a8\u5668\u7684\u5e94\u7528\u3002\u7814\u7a76\u6210\u679c\u4ee5\u201cGiant tunnelling electroresistance in metal\/ferroelectric\/semiconductor tunnel junctions by engineering the Schottky barrier<\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Nature\u00a0 Communications\u4e0a\u3002<\/p>\n

\u7814\u7a76\u4eba\u5458\u7528\u8109\u51b2\u6fc0\u5149\u6c89\u79ef\u6cd5\u5728NbSTO (Nb: 0.01\u20131.0 wt%)\u5355\u6676\u886c\u5e95\u751f\u957f4-16\u6676\u80de\u539a\u7684\u8d85\u8584BTO\u8584\u819c\uff0c\u7136\u540e\u518d\u5728BTO\/NbSTO\u5f02\u8d28\u7ed3\u4e0a\u6e85\u5c04Pt\u7535\u6781\uff0c\u4ece\u800c\u5236\u5907\u51fa\u94c1\u7535\u96a7\u9053\u7ed3\u3002\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u6539\u53d8Nb\u7684\u63ba\u6742\u91cf\u548cBaTiO3<\/sub>\u8584\u819c\u7684\u539a\u5ea6\uff0c\u5bf9\u8096\u7279\u57fa\u52bf\u5792\u8fdb\u884c\u8c03\u6574\u8bbe\u8ba1\uff0c\u53d1\u73b00.1 wt% Nb\u63ba\u6742\u91cf\u548c4\u4e2a\u6676\u80de\u5927\u5c0f\u539a\u7684BaTiO3<\/sub>\u8584\u819c\u7684\u94c1\u7535\u96a7\u9053\u7ed3\u5f00\/\u5173\u6bd4\u9ad8\u8fbe6.0\u00d7106<\/sup>\uff0c\u5f53BaTiO3<\/sub>\u8584\u819c\u6700\u8584\u65f6\uff0c\u5176\u5bf9\u96a7\u7a7f\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\uff0c\u4f46\u5176\u4ecd\u5177\u6709\u94c1\u7535\u6027\uff0c\u5668\u4ef6\u8f6c\u53d8\u4e3a\u504f\u632f\u8c03\u5236\u91d1\u5c5e\/\u534a\u5bfc\u4f53\u8096\u7279\u57fa\u7ed3\uff0c\u663e\u793a\u51fa\u901a\u8fc7\u8c03\u8282\u96a7\u7a7f\u963b\u503c\u4ea7\u751f\u5927\u7684\u96a7\u7a7f\u7535\u963b\u6709\u6548\u6027\u3002<\/p>\n

\u7814\u7a76\u4eba\u5458\u7684\u5de5\u4f5c\u4e3a\u5f00\u53d1\u9ad8\u6027\u80fd\u975e\u6613\u5931\u6027\u5b58\u50a8\u5668\u6253\u4e0b\u57fa\u7840\uff0c\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u53c2\u6570\uff0c\u8096\u7279\u57fa\u96a7\u9053\u7ed3\u5177\u6709\u5f88\u597d\u7684\u6027\u80fd\uff0c\u7814\u7a76\u4eba\u5458\u7684\u5de5\u4f5c\u5927\u5927\u4fc3\u8fdb\u4e86\u76f8\u5173\u6750\u6599\u7684\u5e94\u7528\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1<\/strong>\u00a0 <\/strong>NbSTO<\/strong>\u886c\u5e95\u4e0a<\/strong>4<\/strong>\u4e2a\u6676\u80de\u5927\u5c0f\u539a\u7684<\/strong>BaTiO3<\/sub><\/strong>\u8584\u819c\u7684\u5f62\u8c8c\u56fe\u548c\u94c1\u7535\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

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\uff08b\uff09\u4e0d\u540cVAC<\/sub>\u4e0b\uff0c\u5269\u4f59PFM\u538b\u7535\u54cd\u5e94\u6ede\u56de\u66f2\u7ebf\u3002\u63d2\u56fe\u662fVAC<\/sub>\u4e3a3.2V (\u6697\u7eff\u8272) \u548c 4.4V (\u6a59\u8272)\u4e0b\uff0c\u76f8\u6ede\u56de\u66f2\u7ebf\u548c\u632f\u5e45\u6ede\u56de\u66f2\u7ebf\u3002<\/p>\n

\uff08c\uff09\u62df\u5b9a\u6d4b\u8bd5\u7574\u7684\u533a\u57df\u3002<\/p>\n

\uff08d\uff09\u786e\u5b9a\u62df\u5b9a\u6d4b\u8bd5\u7574\u7684\u533a\u57df\u540e\uff0cPFM\u76f8\u56fe\u3002<\/p>\n

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\u56fe<\/strong>2\u00a0 <\/strong>\u4e0d\u540c\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u7684<\/strong>Pt\/BaTiO3<\/sub> (BTO)\/Nb:SrTiO3 <\/sub>(NbSTO)<\/strong>\u94c1\u7535\u96a7\u9053\u7ed3<\/strong>\u7684\u96a7\u7a7f\u7535\u963b<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a, b, c\uff09\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4f9d\u6b21\u51cf\u5c0f\uff0c\u94c1\u7535\u96a7\u9053\u7ed3Pt\u3001BTO \u3001NbSTO\u7684\u80fd\u5e26\u56fe\u3002\u00a0\u0424Pt<\/sub>=5.65eV\u8868\u793a\u94c2\u7535\u6781\u7684\u529f\u51fd\u6570\uff0c\u03c7BTO<\/sub>\u8868\u793a\u949b\u9178\u94a1\u7684\u7535\u5b50\u4eb2\u548c\u80fd\uff0c\u03c7NbSTO<\/sub>\u8868\u793aNbSTO\u7535\u5b50\u4eb2\u548c\u80fd\uff0cEVac<\/sub>\u8868\u793a\u771f\u7a7a\u80fd\u7ea7\uff0cEC<\/sub>, EV<\/sub> \u548c EF<\/sub>\u5206\u522b\u8868\u793aNbSTO\u7684\u5bfc\u5e26\u6700\u4f4e\u80fd\u7ea7\u3001\u4ef7\u5e26\u6700\u9ad8\u80fd\u7ea7\u3001\u8d39\u7c73\u80fd\u7ea7\uff0cd\u8868\u793a\u949b\u9178\u94a1\u8584\u819c\u7684\u539a\u5ea6\uff0cWd<\/sub>\u8868\u793a\u7a7a\u95f4\u7535\u8377\u533a\u7684\u5bbd\u5ea6\u3002<\/p>\n

\uff08d, e\uff09\u5728\u5f00\u548c\u5173\u72b6\u6001\u4e0b\uff0c\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4e3a4\u30018\u300116\u4e2a\u6676\u80de\u5927\u5c0f\uff0cPt\/BTO\/NbSTO (Nb: 0.7 wt%)\u96a7\u9053\u7ed3\u7684\u7535\u6d41-\u7535\u538b\u66f2\u7ebf\u3002\uff08f\uff09\u57280.6V\u7535\u538b\u8bfb\u53d6\u4e0b\uff0c\u7ed3\u7535\u6d41\u548c\u5bf9\u5e94\u7684\u5f00\u5173\u6bd4\u4e0e\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u7684\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n

\u56fe<\/strong>3\u00a0 <\/strong>\u4e0d\u540c<\/strong>Nb<\/strong>\u63ba\u6742\u91cf\u3001<\/strong>\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4e3a<\/strong>4<\/strong>\u6676\u80de\u5927\u5c0f<\/strong>Pt\/BaTiO3<\/sub> (BTO)\/Nb:SrTiO3 <\/sub>(NbSTO)<\/strong>\u94c1\u7535\u96a7\u9053\u7ed3<\/strong>\u7684\u96a7\u7a7f\u7535\u963b<\/strong><\/p>\n

\"\"<\/p>\n

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\u56fe<\/strong>4\u00a0 <\/strong>\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4e3a<\/strong>4<\/strong>\u6676\u80de\u5927\u5c0f<\/strong>Pt\/BaTiO3<\/sub> (BTO)\/Nb:SrTiO3 <\/sub>(NbSTO)<\/strong>\u94c1\u7535\u96a7\u9053\u7ed3\u62df\u5408\u7535\u6d41<\/strong>–<\/strong>\u7535\u538b\u66f2\u7ebf<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a, b\uff09\u5f00\u4e0e\u5173\u72b6\u6001\u4e0b\uff0clnJF<\/sub>\u2013V\u66f2\u7ebf\uff0c\u9ed1\u8272\u5b9e\u7ebf\u662f\u5176\u62df\u5408\u66f2\u7ebf\uff0c\u62df\u5408\u65b9\u7a0b\u4e3a\u65b9\u7a0b\uff081\uff09\u3002\u56fea\u4e2d\u7684\u63d2\u56fe\u662fNb\u63ba\u6742\u91cf\u4e3a0.1 wt%\u7684\u96a7\u9053\u7ed3\u7684\u7535\u6d41\u548c\u7535\u538b\u66f2\u7ebf\uff0c\u9752\u8272\u5b9e\u7ebf\u662f\u76f4\u63a5\u96a7\u7a7f\u6a21\u578b\u7684\u62df\u5408\u7ed3\u679c\u3002<\/p>\n

\uff08c\uff09\u4ece\u62df\u5408\u7ed3\u679c\u5f97\u5230\u7684\u7406\u60f3\u56e0\u5b50n\u4e0eNb\u63ba\u6742\u91cf\u7684\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n

\u56fe<\/strong>5\u00a0 <\/strong>\u4e0d\u540c<\/strong>Nb<\/strong>\u63ba\u6742\u91cf\u3001<\/strong>\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4e3a<\/strong>4<\/strong>\u4e2a<\/strong>\u6676\u80de\u5927\u5c0f<\/strong>Pt\/BaTiO3<\/sub> (BTO)\/Nb:SrTiO3 <\/sub>(NbSTO)<\/strong>\u94c1\u7535\u96a7\u9053\u7ed3<\/strong>C-V<\/strong>\u7279\u5f81\u66f2\u7ebf\u548c\u80fd\u7ebf\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u5f00\u548c\u5173\u72b6\u6001\u4e0b\uff0cCd<\/sub>-2<\/sup>-Vd\u66f2\u7ebf\uff0c\u9ed1\u8272\u5b9e\u7ebf\u662fCd<\/sub>-2<\/sup>= 2\uff08Vbi<\/sub> \u2013Vd<\/sub>\uff09\/q\u03b50<\/sub>\u03b5r<\/sub>ND<\/sub>S2<\/sup>\u62df\u5408\u7ed3\u679c\u3002a\u4e2d\u7684\u63d2\u56fe\u662fNb\u63ba\u6742\u91cf\u4e3a0.1 <\/strong>wt% \u5668\u4ef6\u5728\u5f00\u72b6\u6001\u4e0b\u7684Cd<\/sub>-2<\/sup>-Vd<\/sub>\u66f2\u7ebf\u3002<\/p>\n

\uff08b\uff09\u4ece\u62df\u5408\u7ed3\u679c\u5f97\u5230\u7684ND<\/sub>\u4e0eNb\u63ba\u6742\u91cf\u7684\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n

\uff08c\uff09\u4ece\u62df\u5408\u7ed3\u679c\u5f97\u5230\u7684Vbi<\/sub>\u4e0eNb\u63ba\u6742\u91cf\u7684\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n

\uff08d\uff09\u5f00\u548c\u5173\u72b6\u6001\u4e0b\uff0cWd\u4e0eNb\u63ba\u6742\u91cf\u7684\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n

\uff08f, g, h\uff09\u5f00\u548c\u5173\u72b6\u6001\u4e0b\uff0cNb\u63ba\u6742\u91cf\u4e3a1.0\u30010.1\u30010.01 wt%\u7ed3\u96f6\u504f\u538b\u4e0b\u7684\u80fd\u7ebf\u56fe\uff0c\u5176\u4e2d\u7eff\u7bad\u5934\u4ee3\u8868\u76f4\u63a5\u96a7\u7a7f\uff0c\u800c\u6a59\u7ebf\u4ee3\u8868\u70ed\u8f85\u52a9\u96a7\u7a7f\u3002<\/p>\n

\u56fe<\/strong>6\u00a0 <\/strong>Nb<\/strong>\u63ba\u6742\u91cf\u4e3a<\/strong>1.0<\/strong>\u548c<\/strong>0.1<\/strong> wt%<\/strong>\u3001<\/strong>\u949b\u9178\u94a1\u8584\u819c\u539a\u5ea6\u4e3a<\/strong>4<\/strong>\u6676\u80de\u5927\u5c0f<\/strong>Pt\/BaTiO3<\/sub> (BTO)\/Nb:SrTiO3 <\/sub>(NbSTO)<\/strong>\u94c1\u7535\u96a7\u9053\u7ed3\u8010\u4e45\u6027<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u6570\u636e\u7684\u4fdd\u6301\u6027\u3002<\/p>\n

\uff08b\uff09\u53cc\u6781\u7535\u963b\u5207\u6362\uff0c\u5bf9\u4e8e1.0 \u548c0.1 wt% FTJs\uff0c\u5faa\u73af\u8109\u51b2\u7535\u538b\u5206\u522b\u4e3a+2.5\/-3.0V\u548c+4.5\/- 5.0V\uff0c\u7ea2\u8272\u8109\u51b2\u7535\u538b\u4e3a0.6V\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u7814\u7a76\u4eba\u5458\u7528\u8109\u51b2\u6fc0\u5149\u6c89\u6dc0\u6cd5\u548c\u6e85\u5c04\u6cd5\u5236\u5907\u4e86Pt\/BaTiO3<\/sub>\/Nb:SrTiO3<\/sub>\u91d1\u5c5e\/\u94c1\u7535\/\u534a\u5bfc\u4f53\u96a7\u9053\u7ed3\uff0c\u7cfb\u7edf\u7814\u7a76\u4e86\u949b\u9178\u94a1\u8584\u819c\u7684\u539a\u5ea6\u548cNb\u63ba\u6742\u91cf\u5bf9\u5668\u4ef6\u7ed3\u6784\u3001\u6027\u80fd\u7b49\u5f71\u54cd\u3002\u7814\u7a76\u4eba\u5458\u53d1\u73b0\u53d1\u73b00.1 wt% Nb\u63ba\u6742\u91cf\u548c4\u4e2a\u6676\u80de\u5927\u5c0f\u539a\u7684BaTiO3<\/sub>\u8584\u819c\u7684\u94c1\u7535\u96a7\u9053\u7ed3\u5f00\/\u5173\u6bd4\u9ad8\u8fbe6.0\u00d7106<\/sup>\uff0c\u4e5f\u627e\u5230\u4e86\u4e00\u7cfb\u5217\u89c4\u5f8b\u3002\u7814\u7a76\u4eba\u5458\u7684\u5de5\u4f5c\u5927\u5927\u63a8\u52a8\u4e86\u94c1\u7535\u96a7\u9053\u7ed3\u7684\u5e94\u7528\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aGiant tunnelling electroresistance in metal\/ferroelectric\/semiconductor tunnel junctions by engineering the Schottky barrier<\/a><\/strong>\uff08Nature\u00a0 Communications,2017, DOI: 10.1038\/ncomms15217\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4\u4e00\u68f5\u677e\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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