{"id":162510,"date":"2018-12-24T06:30:33","date_gmt":"2018-12-23T22:30:33","guid":{"rendered":"\/\/m.iemloyee.com\/?p=162510"},"modified":"2018-12-23T22:01:53","modified_gmt":"2018-12-23T14:01:53","slug":"%e5%b7%b2%e6%a0%a1-adv-funct-mater-%e5%80%9f%e5%8a%a9n%e5%8e%9f%e5%ad%90%e7%9a%84%e7%94%b5%e8%8d%b7%e8%b0%83%e5%88%b6%ef%bc%8c%e5%9c%a8%e9%93%81%e7%a3%81-%e6%b0%a7%e5%8c%96%e7%89%a9%e5%bc%82","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=162510","title":{"rendered":"Adv. Funct. Mater. : \u501f\u52a9N\u539f\u5b50\u7684\u7535\u8377\u8c03\u5236\uff0c\u5728\u94c1\u78c1\/\u6c27\u5316\u7269\u5f02\u8d28\u7ed3\u6784\u4e2d\u83b7\u5f97\u53ef\u63a7\u7684\u8f68\u9053\u7ed3\u6784\u548c\u754c\u9762\u78c1\u6027"},"content":{"rendered":"

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

\n \u5177\u6709\u5782\u76f4\u78c1\u5404\u5411\u5f02\u6027(PMA)\u7684\u94c1\u78c1\u8584\u819c\u6210\u4e3a\u5177\u6709\u8d85\u9ad8\u5bc6\u5ea6\u548c\u4f4e\u80fd\u8017\u7684\u78c1\u5b58\u50a8\u548c\u903b\u8f91\u5668\u4ef6\u7684\u6838\u5fc3\u5143\u4ef6\u3002\u5728\u76ee\u524d\u7684\u5782\u76f4\u6750\u6599\u4f53\u7cfb\u4e2d\uff0c\u5728\u94c1\u78c1\u91d1\u5c5e(FM= Fe, Co, CoFeB)\u548c\u91d1\u5c5e\u6c27\u5316\u7269(MO=AlO, MgO, TaO)\u4e4b\u95f4\u7684\u754c\u9762\u5904\u53ef\u89c2\u5bdf\u5230\u975e\u5e38\u5f3a\u7684PMA(\u22483 erg\u00b7cm-2<\/sup>)\u3002FM\/MO\u7ed3\u6784\u7684PMA\u4e0e\u754c\u9762\u8f68\u9053\u914d\u7f6e\u5bc6\u5207\u76f8\u5173\uff0c\u4f8b\u5982FM-O\u6742\u5316\u548cFM\u5c42\u7684\u8f68\u9053\u5360\u7528\u3002\u56e0\u6b64\uff0c\u5177\u6709\u8c03\u5236FM\/MO\u754c\u9762\u8f68\u9053\u7279\u6027\u7684\u80fd\u529b\u6709\u5229\u4e8e\u5668\u4ef6\u7684\u78c1\u6027\u53ef\u8c03\u6027\u3002\u4f20\u7edf\u5de5\u4f5c\u5e38\u901a\u8fc7\u5916\u52a0\u573a\u6765\u5b9e\u73b0\u8f68\u9053\u8c03\u8282\u3002\u7136\u800c\uff0c\u5bf9\u5916\u52a0\u573a\u7684\u5f3a\u70c8\u4f9d\u8d56\u6027\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4e0d\u5229\u4e8e\u5b9e\u9645\u5e94\u7528\u3002\u73b0\u5728\u7684\u7814\u7a76\u5174\u8da3\u662f\u662f\u5426\u53ef\u901a\u8fc7\u65e0\u5916\u52a0\u573a\u7b56\u7565\u6765\u8c03\u8282\u8f68\u9053\u6027\u80fd\u548c\u754c\u9762\u78c1\u6027\u3002
\n \u6c2e\u539f\u5b50\u901a\u5e38\u4f5c\u4e3a\u6742\u539f\u5b50\u6765\u8c03\u8282\u8bb8\u591a\u534a\u5bfc\u4f53\u6750\u6599\u7684\u80fd\u5e26\u7ed3\u6784\uff0c\u6781\u5927\u5730\u6539\u53d8\u4e86\u76f8\u5e94\u7684\u5149\u5b66\u3001\u7535\u5b66\u548c\u50ac\u5316\u6027\u80fd\u3002\u7136\u800c\uff0cFM\u6750\u6599\u4e2d\u7684\u7535\u5b50\u7ed3\u6784\u4e0e\u5e38\u89c4\u534a\u5bfc\u4f53\u6750\u6599\u4e2d\u7684\u80fd\u5e26\u7ed3\u6784\u5b8c\u5168\u4e0d\u540c\uff0c\u6c2e\u539f\u5b50\u8c03\u63a7\u51e0\u4e4e\u6ca1\u6709\u62a5\u9053\u3002\u7279\u522b\u7684\uff0c\u5177\u6709\u6c2e\u539f\u5b50\u7684FM\/MO\u53cc\u5c42\u4e2d\u7684\u8f68\u9053\u914d\u7f6e\u548c\u754c\u9762\u78c1\u6027\u8c03\u63a7\u662f\u4e00\u4e2a\u5177\u6709\u6311\u6218\u6027\u7684\u95ee\u9898\u3002<\/p>\n

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

\n \u8fd1\u65e5\uff0c\u5317\u4eac\u79d1\u6280\u5927\u5b66\u4e8e\u5e7f\u534e\u6559\u6388\u3001\u51af\u6625\u6559\u6388\u3001\u5929\u6d25\u5927\u5b66\u7c73\u6587\u535a\u6559\u6388(\u5171\u540c\u901a\u8baf\u4f5c\u8005)\u7b49<\/strong>\u63d0\u51fa\u4e86\u4e00\u79cd\u901a\u8fc7\u6c2e\u63ba\u5165\u6539\u53d8FM\/MO\u754c\u9762\u914d\u4f4d\u73af\u5883\u7684\u65b0\u578b\u8f68\u9053\u8c03\u5236\u7b56\u7565\uff0c\u5e76\u5728Adv. Funct. Mater.<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cNitrogen Tuned Charge Redistribution and Orbital Reconfiguration in Fe\/MgO Interface for Significant Interfacial Magnetism Tunability\u201d<\/strong>\u7684\u7814\u7a76\u8bba\u6587\u3002\u4f5c\u8005\u5728N2<\/sub>\u6c14\u6c1b\u4e0b\u5236\u5907Fe\/MgO\u53cc\u5c42\uff0cN\u539f\u5b50\u5360\u636eFe\u6676\u683c\u7684\u95f4\u9699\u4f4d\u7f6e\uff0c\u5bfc\u81f4Fe\/MgO\u754c\u9762\u5904\u7684\u7535\u8377\u518d\u5206\u5e03\uff0c\u5e76\u4e14\u968f\u7740\u9762\u5916\u8f68\u9053\u5360\u6709\u7387\u7684\u589e\u52a0\u800c\u89e6\u53d1Fe\u7684\u8f68\u9053\u91cd\u6784\u3002\u56e0\u6b64\uff0c\u8f68\u9053\u78c1\u6027\u5f97\u5230\u6709\u6548\u8c03\u6574\uff0c\u663e\u8457\u5730\u589e\u5f3a\u4e86\u754c\u9762\u78c1\u5404\u5411\u5f02\u6027\u80fd\u91cf(0.6 erg\u00b7cm-2<\/sup>)\uff0c\u5e76\u4e14\u4ece\u9762\u5185\u5230\u5782\u76f4\u65b9\u5411\u5177\u6709\u5bbd\u7684\u78c1\u5404\u5411\u5f02\u6027\u53ef\u8c03\u6027\u3002\u6b64\u5916\uff0c\u4fdd\u6301\u5782\u76f4\u78c1\u5404\u5411\u5f02\u6027\u7684Fe\u539a\u5ea6\u4ece\u5c0f\u4e8e1 nm\u5ef6\u4f38\u52303 nm\uff0c\u6709\u5229\u4e8e\u63d0\u9ad8\u7eb3\u7c73\u7ea7\u7684\u5668\u4ef6\u7684\u4fe1\u566a\u6bd4\u548c\u7a33\u5b9a\u6027\u3002\u4e0a\u8ff0\u53d1\u73b0\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728FM\/MO\u5f02\u8d28\u754c\u9762\u4e0a\u8c03\u63a7\u6027\u80fd\u7684\u65e0\u5916\u90e8\u573a\u8f68\u9053\u5de5\u7a0b\u7b56\u7565\uff0c\u6709\u671b\u63a8\u52a8\u78c1\u5b58\u50a8\u548c\u903b\u8f91\u5668\u4ef6\u7684\u53d1\u5c55\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong>
\n \u56fe1 \u6c2e\u63ba\u6742\u5bf9\u78c1\u6027\u7684\u8c03\u8282<\/strong><\/p>\n

\"\"<\/p>\n

a) Cr(5 nm)\/FeNx<\/sub>(t)\/MgO(2 nm)\/Cr(4 nm)\u6837\u54c1\u7684Keff<\/sub>\u503c\u968fx\u548ct\u7684\u53d8\u5316\uff1b
\n b) \u4e0d\u540cx\u503c\u65f6Keff<\/sub>\u00d7t\u968ft\u7684\u53d8\u5316\uff1b
\n c,d) Kv<\/sub>\u548cKi<\/sub>\u968fx\u7684\u53d8\u5316\uff0c\u5176\u4e2dKv<\/sub>\u548cKi<\/sub>\u5206\u522b\u4ece\u56feb\u4e2d\u66f2\u7ebf\u7684\u659c\u7387\u548cy\u8f74\u622a\u8ddd\u83b7\u5f97\u3002<\/p>\n

\u56fe2 \u9762\u5185\u548c\u9762\u5916\u78c1\u6ede\u56de\u7ebf\u968f\u6c2e\u63ba\u6742\u91cf\u7684\u53d8\u5316<\/strong><\/p>\n

\"\"<\/p>\n

Cr(5 nm)\/FeNx<\/sub>(2 nm)\/MgO(2 nm)\/Cr(4 nm)\u6837\u54c1\u7684\u9762\u5185\u548c\u9762\u5916\u78c1\u6ede\u56de\u7ebf\u968f\u6c2e\u63ba\u6742\u91cf\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe3 \u6c2e\u63ba\u6742\u5bf9\u5f02\u8d28\u754c\u9762\u5316\u5b66\u6001\u7684\u5f71\u54cd<\/strong><\/p>\n

\"\"<\/p>\n

a) Cr(5 nm)\/FeNx<\/sub>(2 nm)\/MgO(2 nm)\/Cr(4 nm)\u6837\u54c1\u7684FeN\/MgO\u754c\u9762\u5904\u7684\u9ad8\u5206\u8fa8Fe 2p XPS\u5149\u8c31\uff0c\u5176\u4e2d\u6d4b\u91cf\u66f2\u7ebf\u548c\u62df\u5408\u66f2\u7ebf\u5206\u522b\u7528\u9ed1\u7ebf\u548c\u7ea2\u7ebf\u7ed8\u5236\uff0c\u84dd\u8272\u3001\u7eff\u8272\u548c\u6a59\u8272\u4e2d\u7684\u4e09\u4e2a\u62df\u5408\u5cf0\u5206\u522b\u4ee3\u8868\u91d1\u5c5eFe\u3001FeOy<\/sub>(y <1)\u548cFeO\uff1b
\n b) \u6839\u636e\u62df\u5408\u5cf0\u7684\u9762\u79ef\u6bd4\u8ba1\u7b97\u4e0d\u540cFe\u4ef7\u6001\u7684\u76f8\u5bf9\u542b\u91cf\u3002<\/p>\n

\u56fe4 \u6c2e\u63ba\u6742\u5bf9\u5f02\u8d28\u754c\u9762\u7535\u5b50\u7ed3\u6784\u7684\u5f71\u54cd<\/strong><\/p>\n

\"\"<\/p>\n

a) Cr(5 nm)\/FeNx<\/sub>(2 nm)\/MgO(2 nm)\/Cr(1 nm)\u6837\u54c1Fe\/MgO\u754c\u9762\u5904\u7684O K\u8fb9XAS\u5149\u8c31\uff0c\u5149\u5b50\u6781\u5316\u51e0\u4e4e\u5782\u76f4\u4e8e\u6837\u54c1\u8868\u9762\uff1b
\n b) Cr(5 nm)\/FeNx<\/sub>(2 nm)\/MgO(2 nm)\/Cr(1 nm)\u6837\u54c1Fe\/MgO\u754c\u9762\u5904\u7684Fe L\u8fb9XAS\u5149\u8c31\u3002<\/p>\n

\u56fe5 \u6c2e\u63ba\u6742\u5bf9\u6676\u4f53\u7ed3\u6784\u7684\u5f71\u54cd<\/strong><\/p>\n

\"\"<\/p>\n

a-f) Fe(10 nm)\/Cr(5 nm)\/FeNx<\/sub>(10 nm)\/MgO(2 nm)\/Cr(4 nm)\u591a\u5c42\u7684XRD\u5149\u8c31\uff1b
\n g) FeN\u5c42\u7684\u76f8\u7ec4\u5206\u968f\u6c2e\u63ba\u6742\u7684\u53d8\u5316\uff1b
\n h) Fe\/MgO\u548cFeN\/MgO\u754c\u9762\u5904\u7684\u7535\u8377\u8f6c\u79fb\u7684\u793a\u610f\u56fe\u3002<\/p>\n

\u56fe6 \u6c2e\u63ba\u6742\u5bf9\u8f68\u9053\u5360\u6709\u7387\u7684\u5f71\u54cd<\/strong><\/p>\n

\"\"<\/p>\n

a-f) Cr(5 nm)\/FeNx<\/sub>(2 nm)\/MgO(2 nm)\/Cr(1 nm)\u6837\u54c1FeN\/MgO\u754c\u9762\u5904\u7684\u5f52\u4e00\u5316Fe L\u8fb9XAS\u548cXLD\u5149\u8c31\uff0cE\/\/a\u548cE\/\/c\u5904\u7684XAS\u5149\u8c31\u5206\u522b\u4ee3\u8868\u5e73\u884c\u548c\u5782\u76f4\u4e8e\u6837\u54c1\u7684\u5149\u5b50\u504f\u632f\uff0c\u4e3a\u6e05\u6670\u8d77\u89c1\uff0cXLD\u653e\u5927\u4e86\u4e94\u500d\uff1b
\n g) L2<\/sub>\u5cf0(710.0-725.0 eV)\u5468\u56f4\u7684\u79ef\u5206\u9762\u79efAXLD<\/sub>(XLD \u00d7 5)\u968fx\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe7 DFT\u7406\u8bba\u8ba1\u7b97<\/strong><\/p>\n

\"\"<\/p>\n

a) \u6c27\u5316Fe\/MgO\u5f02\u8d28\u7ed3\u6784\u7684\u7ed3\u6784\u793a\u610f\u56fe\uff0c\u5176\u4e2d\u9ec4\u8272(\u84dd\u8272)\u533a\u57df\u8868\u793a\u7535\u5b50\u5bc6\u5ea6\u7684\u589e\u91cf(\u51cf\u5c11)(\u4e0b\u540c)\uff1b
\n b) \u6c27\u5316Fe4<\/sub>N\/MgO\u5f02\u8d28\u7ed3\u6784\u7684\u7ed3\u6784\u793a\u610f\u56fe\uff1b
\n c) Fe\/MgO\u548cFe4<\/sub>N\/MgO\u5f02\u8d28\u7ed3\u6784\u4e2d\u7684\u539f\u5b50\u5c42\u5206\u8fa8MAE\uff1b
\n d) \u4e24\u79cd\u5f02\u8d28\u7ed3\u6784\u7684Fe I\u5c42\u4e2dFe\u539f\u5b50\u7684\u5c40\u90e8DOS\uff0c\u5176\u4e2d\u5782\u76f4\u7ebf\u8868\u793a\u8d39\u7c73\u80fd\u7ea7\uff0c\u8bbe\u5b9a\u4e3a\u96f6\uff1b
\n e) \u4e24\u79cd\u5f02\u8d28\u7ed3\u6784\u7684Fe I\u5c42\u4e2d\u7684Fe\u539f\u5b50\u7684\u8f68\u9053\u5206\u8fa8MAE\u3002<\/p>\n

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

\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u901a\u8fc7\u6c2e\u8c03\u63a7Fe\/MgO\u754c\u9762\u7535\u8377\u518d\u5206\u914d\u5f00\u53d1\u4e86\u4e00\u79cd\u65e0\u5916\u573a\u8f68\u9053\u8c03\u8282\u7b56\u7565\u3002\u57fa\u4e8e\u8f68\u9053\u53ef\u8c03\u6027\uff0cFe\u7684\u8f68\u9053\u78c1\u6027\u53ef\u7cbe\u786e\u8c03\u6574\uff0c\u663e\u8457\u589e\u5f3a\u4e86\u754c\u9762\u78c1\u5404\u5411\u5f02\u6027\u80fd\u91cf(0.6 erg\u00b7cm-2<\/sup>)\uff0c\u5e76\u4e14\u5728\u6c89\u79ef\u72b6\u6001\u4e0b\u89e6\u53d1\u4ece\u9762\u5185\u5230\u5782\u76f4\u65b9\u5411\u7684\u5404\u5411\u5f02\u6027\u53ef\u8c03\u6027\u3002\u6b64\u5916\uff0c\u7528\u4e8e\u7ef4\u6301PMA\u7684FM\u5c42\u7684\u539a\u5ea6\u7a97\u53e3\u4ece\u5c0f\u4e8e1 nm\u6269\u5c55\u52303 nm\uff0c\u6709\u5229\u4e8e\u63d0\u9ad8\u5668\u4ef6\u6027\u80fd\u4ee5\u6269\u5c55\u529f\u80fd\u5316\u5e94\u7528\u3002\u8be5\u5de5\u4f5c\u5b9e\u73b0\u4e86FM\/MO\u754c\u9762\u8f68\u9053\u7279\u6027\u7684\u6709\u6548\u8c03\u5236\uff0c\u53ef\u4e3a\u8c03\u6574\u5176\u4ed6\u4e0e\u7269\u4f53\u76f8\u5173\u7684\u754c\u9762\u6027\u80fd\u63d0\u4f9b\u53c2\u8003\uff0c\u5982\u96a7\u9053\u78c1\u963b\u3001\u81ea\u65cb\u8f68\u9053\u8f6c\u77e9\u548cDzyaloshinskii-Moriya\u76f8\u4e92\u4f5c\u7528\u3002<\/p>\n

\u3010\u56e2\u961f\u5de5\u4f5c\u603b\u7ed3\u3011<\/strong><\/p>\n

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\u6587\u732e\u94fe\u63a5\uff1a\u00a0Nitrogen Tuned Charge Redistribution and Orbital Reconfiguration in Fe\/MgO Interface for Significant Interfacial Magnetism Tunability<\/a> <\/strong>(Adv. Funct. Mater.<\/strong>, 2018, DOI: 10.1002\/adfm.201806677)<\/p>\n

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