{"id":132918,"date":"2018-04-05T14:00:20","date_gmt":"2018-04-05T06:00:20","guid":{"rendered":"\/\/m.iemloyee.com\/?p=132918"},"modified":"2018-04-01T20:46:33","modified_gmt":"2018-04-01T12:46:33","slug":"%e5%8a%a0%e5%b7%9e%e5%a4%a7%e5%ad%a6%e6%ac%a7%e6%96%87%e5%88%86%e6%a0%a1phys-rev-lett-%ef%bc%9a%e5%a4%9a%e9%93%81%e6%80%a7%e6%9d%90%e6%96%99%e7%9a%84%e7%bc%ba%e9%99%b7%e5%bc%95%e8%b5%b7%e7%9a%84","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=132918","title":{"rendered":"\u52a0\u5dde\u5927\u5b66\u6b27\u6587\u5206\u6821Phys. Rev. Lett.\uff1a\u591a\u94c1\u6027\u6750\u6599\u7684\u7f3a\u9677\u5f15\u8d77\u7684\u523a\u732c\u72b6\u504f\u632f\u6001"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n \u7531\u4e8e\u5f3a\u5173\u8054\u6c27\u5316\u7269\u4e2d\u81ea\u65cb\uff0c\u7535\u8377\uff0c\u8f68\u9053\u548c\u6676\u683c\u81ea\u7531\u5ea6\u7684\u76f8\u4e92\u4f5c\u7528\u800c\u4ea7\u751f\u7684\u51c6\u4e00\u7ef4\u94c1\u78c1\u6001\u901a\u5e38\u8868\u73b0\u51fa\u590d\u6742\u7684\u6781\u5316\u6216\u81ea\u65cb\u7eb9\u7406\u548c\u72ec\u7279\u7684\u6027\u8d28\uff0c\u5bf9\u5f00\u53d1\u65b0\u7684\u5668\u4ef6\u5177\u6709\u5f88\u5927\u7684\u5e0c\u671b\u3002\u8fd9\u4e9b\u78c1\u6027\u72b6\u6001\u53ef\u4ee5\u901a\u8fc7\u78c1\u573a\u6709\u6548\u5730\u63a7\u5236\uff0c\u6216\u8005\u4ee5\u8d85\u4f4e\u7535\u6d41\u5bc6\u5ea6\u901a\u8fc7\u81ea\u65cb\u8f6c\u79fb\u529b\u77e9\u9a71\u52a8\uff0c\u56e0\u6b64\u53ef\u4ee5\u6f5c\u5728\u5730\u5e94\u7528\u4e8e\u9ad8\u5bc6\u5ea6\u78c1\u5b58\u50a8\u5668\u6216\u7535\u6d41\u9a71\u52a8\u5668\u4ef6\u3002\u540c\u65f6\uff0c\u5bf9\u94c1\u7535\u4f53\u4e2d\u65b0\u7684\u6781\u5316\u6001\u7684\u7814\u7a76\u4e5f\u5f15\u8d77\u4e86\u76f8\u5f53\u5927\u7684\u5174\u8da3\uff0c\u56e0\u4e3a\u4f7f\u7528\u6bd4\u78c1\u4f53\u4e2d\u7684\u5bf9\u5e94\u7269\u66f4\u5c0f\u7684\u94c1\u7535\u6001\u4f5c\u4e3a\u7eb3\u7c73\u5668\u4ef6\u4e2d\u7684\u529f\u80fd\u5143\u4ef6\u662f\u7279\u522b\u6709\u5438\u5f15\u529b\u7684\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u7f8e\u56fd\u52a0\u5229\u798f\u5c3c\u4e9a\u5927\u5b66\u6b27\u6587\u5206\u6821<\/strong>Xiaoqing Pan<\/strong>\uff08<\/strong>\u901a\u8baf\u4f5c\u8005\uff09\u8bfe\u9898\u7ec4<\/strong>\u5728Phys. Rev. Lett.<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cDefect-Induced Hedgehog Polarization States in Multiferroics<\/strong>\u201d \u7684\u6587\u7ae0\u3002\u7814\u7a76\u56e2\u961f\u8868\u660e\u7eb3\u7c73\u7ea7\u7f3a\u9677\uff0c\u5982\u975e\u5316\u5b66\u8ba1\u91cf\u7684\u7eb3\u7c73\u533a\u57df\uff08NSNRs\uff09\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u7eb3\u7c73\u6784\u5efa\u5757\u5728\u539f\u578b\u591a\u94c1\u6027BiFeO3<\/sub>\u4e2d\u521b\u5efa\u590d\u6742\u7684\u7535\u6781\u5316\u7ed3\u6784\u3002\u4e00\u7cfb\u5217\u5e26\u7535\u8377\u7684NSNRs\u662f\u5728BiFeO3<\/sub>\u8584\u819c\u901a\u8fc7\u8c03\u6574\u8584\u819c\u751f\u957f\u8fc7\u7a0b\u4e2d\u7684\u57fa\u5e95\u6e29\u5ea6\u3002\u539f\u5b50\u5c3a\u5ea6\u626b\u63cf\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u6210\u50cf\u63ed\u793a\u4e86\u56f4\u7ed5\u8fd9\u4e9bNSNRs\u7684\u5916\u6765\u504f\u632f\u65cb\u8f6c\u6a21\u5f0f\u3002\u504f\u632f\u6a21\u5f0f\u7c7b\u4f3c\u4e8e\u523a\u732c\u6216\u6da1\u65cb\u62d3\u6251\u7ed3\u6784\uff0c\u5e76\u4e14\u53ef\u4ee5\u5f15\u8d77\u6676\u683c\u5bf9\u79f0\u6027\u7684\u5c40\u90e8\u5316\uff0c\u5bfc\u81f4\u7c7b\u4f3c\u4e8e\u5177\u6709\u9ad8\u538b\u7535\u6027\u7684\u51c6\u540c\u578b\u76f8\u8fb9\u754c\u7684\u6df7\u5408\u76f8\u7ed3\u6784\u3002\u76f8\u573a\u6a21\u62df\u8868\u660e\u89c2\u5bdf\u5230\u7684\u6781\u5316\u6784\u578b\u4e3b\u8981\u7531NSNR\u5904\u7684\u5e26\u7535\u72b6\u6001\u5f15\u8d77\u3002\u56e0\u6b64\uff0c\u5de5\u7a0b\u7f3a\u9677\u53ef\u80fd\u4e3a\u5f00\u53d1\u94c1\u7535\u6216\u591a\u94c1\u57fa\u7eb3\u7c73\u5668\u4ef6\u63d0\u4f9b\u65b0\u7684\u9014\u5f84\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1\u00a0<\/strong>\u539f\u5b50\u7ed3\u6784\u548c<\/strong>BiFeO3<\/sub><\/strong>\u8584\u819c\u4e2d\u7684\u7f3a\u9677\u3002<\/strong><\/p>\n \uff08a\uff09BiFeO3<\/sub>\u7684\u62df\u7acb\u65b9\u4f53\u7ed3\u6784\u7684\u539f\u5b50\u6a21\u578b\uff1b<\/p>\n \uff08b\uff09\u6cbf[100] PC\u533a\u8f74\u7684\u6a2a\u622a\u9762\u89c2\u5bdf\u7684BiFeO3<\/sub>\u8584\u819c\u7684HAADF STEM\u56fe\u50cf\uff1b<\/p>\n \uff08c\uff09BiFeO3<\/sub>\uff08BFO\uff09\/ TbScO3<\/sub>\uff08TSO\uff09\u754c\u9762\u533a\u57df\u7684HAADF STEM\u56fe\u50cf\uff1b<\/p>\n \u56fe<\/strong>2\u00a0<\/strong>\u539f\u5b50\u7ed3\u6784\u4e0e<\/strong>BFO<\/strong>\u8584\u819c\u4e2d\u7684\u534a\u5706\u5f62\u7f3a\u9677\u6709\u5173\u3002<\/strong><\/p>\n \uff08a\uff09\u5305\u542b\u4e00\u4e2a\u5178\u578b\u7684\u534a\u5706\u73af\u7f3a\u9677\u7684BFO\/TSO\u754c\u9762\u533a\u57df\u7684HAADF STEM\u56fe\u50cf\uff1b<\/p>\n \uff08b\uff09\u7f3a\u9677[\u56fe\uff08a\uff09\u4e2d\u7684\u7ea2\u8272\u77e9\u5f62\u7a81\u51fa\u663e\u793a\u533a\u57df\u201cB\u201d\u4e2d\u7684\u975e\u5316\u5b66\u8ba1\u91cf\u5e73\u9762\u5355\u4f4d\u7684\u653e\u5927\u56fe\u50cf\u4ee5\u53ca\u5176\u53f3\u4fa7\u5bf9\u5e94\u539f\u5b50\u7ed3\u6784\u7684\u6a21\u578b\uff1b<\/p>\n \uff08c\uff09\u5728\u7f3a\u9677\uff08a\uff09\u4e2d\u7684\u7ea2\u8272\u77e9\u5f62\u7a81\u51fa\u663e\u793a\u533a\u57df\u201cC\u201d\u4e2d\u7684\u975e\u5316\u5b66\u8ba1\u91cf\u9636\u68af\u5355\u5143\u7684\u653e\u5927\u56fe\u50cf\u4ee5\u53ca\u5176\u53f3\u4fa7\u76f8\u5e94\u539f\u5b50\u7ed3\u6784\u7684\u6a21\u578b\uff1b<\/p>\n \u56fe<\/strong>3 <\/strong>BFO<\/strong>\u8584\u819c\u4e2d\u534a\u5706\u73af\u7f3a\u9677\u5468\u56f4\u7eb3\u7c73\u533a\u7684\u6781\u5316\u56fe\u3002<\/strong><\/p>\n \uff08a\uff09\u4e0e\u56fe2\uff08a\uff09\u76f8\u540c\u7684HAADF STEM\u56fe\u50cf\u8986\u76d6\u504f\u632f\u77e2\u91cf\uff1b<\/p>\n \uff08b\uff09\u901a\u8fc7\u4e0e\u5b9e\u9a8c\u89c2\u5bdf\u7ed3\u6784\u76f8\u4f3c\u7684\u5e26\u7535\u7f3a\u9677\u7a33\u5b9a\u7684\u7574\u7ed3\u6784\u7684\u50cf\u9762\u4e2d\u7684\u504f\u632f\u5206\u5e03\u7684\u76f8\u573a\u6a21\u62df\uff1b<\/p>\n \u56fe<\/strong>4\u00a0<\/strong>\u7531<\/strong>BFO<\/strong>\u8584\u819c\u4e2d\u4e09\u79cd\u4e0d\u540c\u7f3a\u9677\u8bf1\u5bfc\u7684\u7eb3\u7c73\u533a\u7684\u6781\u5316\u56fe\u3002<\/strong><\/p>\n \uff08a\uff09-\uff08c\uff09\u5728BFO\/TSO\u754c\u9762\u4e0a\u65b9\u7684\u4e09\u79cd\u4e0d\u540c\u7f3a\u9677\u7684HAADF STEM\u56fe\u50cf\uff1b<\/p>\n \uff08d\uff09\u7531\uff08a\uff09\u4e2d\u7684\u73af\u5f62\u7f3a\u9677\u548c\u7531\uff08b\uff09\u548c\uff08c\uff09\u4e2d\u7684\u84dd\u8272\u77e9\u5f62\u5f3a\u8c03\u7684\u4e09\u4e2a\u4e0d\u540c\u7eb3\u7c73\u533a\u57df\u4e2d\u7684\u73af\u5f62\u7f3a\u9677\u6240\u5305\u56f4\u7684\u7eb3\u7c73\u533a\u57df\u4e2d\u7684\u6781\u5316\u77e2\u91cf\u7684\u653e\u5927\u56fe\uff1b<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u8be5\u7814\u7a76\u56e2\u961f\u5229\u7528\u7eb3\u7c73\u7ea7\u5e26\u7535\u7f3a\u9677\u8bc1\u660e\u4e86\u591a\u94c1\u6027BiFeO3<\/sub>\u8584\u819c\u4e2d\u65b0\u578b\u523a\u732c\u86cb\u767d\u548c\u53cd\u523a\u732c\u86cb\u767d\u7eb3\u7c73\u7ed3\u6784\u57df\u7684\u7a33\u5b9a\u6027\u3002\u7eb3\u7c73\u533a\u57df\u63d0\u4f9b\u4e86\u65b0\u7684\u673a\u4f1a\u6765\u63a2\u7d22\u81ea\u65cb\uff0c\u7535\u8377\uff0c\u8f68\u9053\u548c\u5177\u6709\u5f3a\u7535\u5b50\u76f8\u5173\u7cfb\u7edf\u7684\u81ea\u7531\u5ea6\u7684\u590d\u6742\u76f8\u4e92\u4f5c\u7528\u3002\u7531\u4e8e\u523a\u732c\u72b6\u6001\u88ab\u9650\u5236\u5728\u7eb3\u7c73\u5c3a\u5bf8\u7ed3\u6784\u7f3a\u9677\u5185\uff0c\u53ef\u4ee5\u63a5\u8fd1\u5c3a\u5bf8\u81f3\u51e0\u4e2a\u5355\u4f4d\u6676\u80de\uff0c\u5e76\u4e14\u5177\u6709\u6bd4\u8584\u819c\u4e2d\u7684\u4e3b\u4f53\u57df\u9ad8\u5f97\u591a\u7684\u5bc6\u5ea6\u3002\u56e0\u6b64\u6253\u5f00\u4e86\u5728\u76f8\u5bf9\u8f83\u539a\u7684\u94c1\u7535\u8584\u819c\u4e2d\u521b\u5efa\u9ad8\u5bc6\u5ea6\u7eb3\u7c73\u533a\u57df\u7684\u5927\u95e8\uff0c\u53ef\u4ee5\u514b\u670d\u57df\u5c3a\u5bf8\u6216\u5bc6\u5ea6\u7684\u9650\u5236\uff0c\u8be5\u5c3a\u5bf8\u5b9a\u5f8b\u89c4\u5b9a\u57df\u5bbd\u5ea6\u4e0e\u6837\u54c1\u539a\u5ea6\u7684\u5e73\u65b9\u6839\u6210\u6bd4\u3002\u5782\u76f4\u4e8e\u523a\u732c\u5e73\u9762\u7684\u504f\u632f\u5206\u91cf\u53ef\u80fd\u662f\u53ef\u5207\u6362\u7684\u3002\u56e0\u6b64\uff0c\u8fdb\u4e00\u6b65\u7814\u7a76\u5e94\u7528\u9886\u57df\u7684\u7535\u5b66\u548c\u78c1\u7535\u6027\u8d28\u548c\u52a8\u529b\u5b66\u53ef\u80fd\u6709\u52a9\u4e8e\u7eb3\u7c73\u7535\u5b50\u5668\u4ef6\u5982\u9ad8\u5bc6\u5ea6\u5b58\u50a8\u5668\u7684\u672a\u6765\u53d1\u5c55\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u4f17\u6240\u5468\u77e5\uff0c\u901a\u8fc7\u5411\u9676\u74f7\u6dfb\u52a0\u5c11\u91cf\u65bd\u4e3b\u63ba\u6742\u5242\u8fdb\u884c\u7f3a\u9677\u5de5\u7a0b\u53ef\u4ee5\u5728\u65bd\u4e3b\u4e0e\u6676\u4f53\u7ed3\u6784\u4e2d\u7684\u9633\u79bb\u5b50\u7a7a\u4f4d\u4e4b\u95f4\u4ea7\u751f\u968f\u673a\u53d6\u5411\u7684\u7f3a\u9677\u5076\u6781\u5b50\uff0c\u4fc3\u8fdb\u4e86\u7574\u58c1\u8fd0\u52a8\uff0c\u4ece\u800c\u5bfc\u81f4\u589e\u5f3a\u7684\u538b\u7535\u6027\u80fd\u3002\u7531\u7eb3\u7c73\u7ea7\u6742\u8d28\u7f3a\u9677\u6240\u7a33\u5b9a\u7684\u53cd\u5bf9\u79f0\u504f\u632f\u6001\u5177\u6709\u6df7\u5408\u76f8\u7ed3\u6784\uff0c\u8fd9\u79cd\u7ed3\u6784\u8ba9\u4eba\u60f3\u8d77\u5728\u51c6\u540c\u578b\u76f8\u754c\u9644\u8fd1\u7684\u94c1\u7535\u7574\u3002\u4e5f\u53ef\u80fd\u8868\u73b0\u51fa\u589e\u5f3a\u7684\u7279\u6027\uff0c\u5982\u5de8\u5927\u7684\u538b\u7535\u6027\uff0c\u56e0\u6b64\u5bf9\u673a\u7535\u5e94\u7528\u5177\u6709\u6f5c\u5728\u7684\u5438\u5f15\u529b\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/strong> Defect-Induced Hedgehog Polarization States in Multiferroics<\/a>\uff08Phys. Rev. Lett.\uff0c2018\uff0cDOI\uff1a 10.1103\/PhysRevLett.120.137602\uff09<\/p>\n \u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u7eb3\u7c73\u6750\u6599\u5b66\u672f\u7ec4Kevin\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406<\/strong>\u3002\u6b22\u8fce\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u7eb3\u7c73\u6750\u6599\u5b66\u672f\u4ea4\u6d41\u7fa4\uff08228686798\uff09\uff01<\/p>\n \u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n<\/p>\n
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