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\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u6765\u81ea\u6d59\u6c5f\u5927\u5b66\u9a6c\u5929\u5b87\u526f\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09\u548c\u65e5\u672c\u56fd\u7acb\u6750\u6599\u7814\u7a76\u6240\u4efb\u6653\u5175\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba<\/strong>\u7814\u7a76\u53d1\u73b0\u9648\u5316\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u5177\u6709\u5f88\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\uff0c\u800c\u4e14\u5176\u78c1\u5316\u5f3a\u5ea6\u548c\u78c1\u81f4\u4f38\u7f29\u7387\u5728\u5f88\u5bbd\u7684\u6e29\u5ea6\u8303\u56f4\u4fdd\u6301\u8f83\u9ad8\u7684\u6c34\u5e73\uff0c\u8be5\u6750\u6599\u6709\u671b\u4fc3\u8fdb\u94c1\u78c1\u6750\u6599\u5728\u9ad8\u6e29\u9886\u57df\u7684\u5e94\u7528\u3002<\/p>\n \u4ed6\u4eec\u5c06\u56fa\u6eb6\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\uff0c\u5728803K\u7684\u6e29\u5ea6\u4e0b\u70ed\u5904\u740612h\uff0c\u6240\u5f97\u5230\u7684\u6750\u6599\u4e0d\u4ec5\u5177\u6709\u8f83\u9ad8\u7684\u78c1\u5316\u5f3a\u5ea6\u548c\u78c1\u81f4\u4f38\u7f29\u7387\uff0c\u800c\u4e14\u8fd8\u8868\u73b0\u51fa\u5f88\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\uff0c\u5176\u5728\u5230\u4e34\u8fd1\u5c45\u91cc\u6e29\u5ea6\uff08TC<\/sub>=880K\uff09\u5f88\u5bbd\u7684\u6e29\u5ea6\u8303\u56f4\u5185\uff0c\u78c1\u5316\u5f3a\u5ea6\u548c\u78c1\u81f4\u4f38\u7f29\u7387\u964d\u5e45\u5f88\u5c0f\u3002\u4e4b\u540e\uff0c\u4ed6\u4eec\u7528X\u5c04\u7ebf\u884d\u5c04\u6280\u672f\u548c\u7535\u5b50\u884d\u5c04\u6280\u672f\u5bf9\u8be5\u6750\u6599\u8fdb\u884c\u4e86\u6d4b\u8bd5\u5206\u6790\uff0c\u63ed\u793a\u4e86\u5176\u9ad8\u70ed\u6e29\u5ea6\u6027\u5b58\u5728\u7684\u673a\u7406\uff0c\u539f\u6765\u968f\u7740\u6e29\u5ea6\u7684\u5347\u9ad8\uff0c\u8be5\u6750\u6599\u4e2d\u53d1\u751f\u4e86bcc\u76f8\u5411L12<\/sub>\u76f8\u8f6c\u53d8\uff0c\u7531\u4e8eL12<\/sub>\u76f8\u7684\u78c1\u5316\u5f3a\u5ea6\u8981\u6bd4bcc\u76f8\u7684\u78c1\u5316\u5f3a\u5ea6\u9ad8\uff0c\u6240\u4ee5\u5176\u5f25\u8865\u4e86\u7531\u4e8e\u6e29\u5ea6\u5347\u9ad8\u6240\u5f15\u8d77\u7684\u6750\u6599\u78c1\u6027\u80fd\u7684\u964d\u4f4e\u3002<\/p>\n \u4ed6\u4eec\u7684\u5de5\u4f5c\u4e0d\u4ec5\u53d1\u73b0\u4e86\u4e00\u79cd\u6781\u5177\u5e94\u7528\u524d\u666f\u7684\u9ad8\u6027\u80fd\u7684\u70ed\u7a33\u5b9a\u94c1\u78c1\u6750\u6599\uff0c\u800c\u4e14\u63ed\u793a\u4e86\u5176\u70ed\u7a33\u5b9a\u6027\u5b58\u5728\u7684\u673a\u7406\uff0c\u4e3a\u8bbe\u8ba1\u548c\u5f00\u53d1\u65b0\u7684\u9ad8\u6027\u80fd\u7684\u70ed\u7a33\u5b9a\u94c1\u78c1\u6750\u6599\u6253\u4e0b\u4e86\u57fa\u7840\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1 <\/strong>\u78c1\u5316\u5f3a\u5ea6\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb<\/strong><\/p>\n \uff08a\uff09\u56fa\u6eb6\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u3001\u9648\u5316\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u3001\u5408\u91d1-D\uff08Tb3<\/sub>Dy0.7<\/sub>Fe2<\/sub>\uff09\u3001Nd-Fe-B\u5546\u4e1a\u78c1\u6027\u6750\u6599\u548cFe-Co-V\u5546\u4e1a\u78c1\u6027\u6750\u6599\u7684\u78c1\u5316\u5f3a\u5ea6\u4e0e\u6e29\u5ea6\u66f2\u7ebf\u3002<\/p>\n \uff08b\uff09\u53e6\u4e00\u79cd\u91cd\u8981\u7684\u53c2\u8003\u7269\u8d28\u7684\u78c1\u5316\u5f3a\u5ea6\u4e0e\u6e29\u5ea6\u66f2\u7ebf\uff0cFe74<\/sub>Ga26<\/sub>\u5408\u91d1\u7684\u70ed\u5904\u7406\u5de5\u827a\u4e0eFe73<\/sub>Ga27<\/sub>\u5408\u91d1\u7684\u70ed\u5904\u7406\u5de5\u827a\u76f8\u540c\u3002\u7f29\u5199S.T.\u4ee3\u8868\u56fa\u6eb6\u5904\u7406\uff0c\u7f29\u5199F\u4ee3\u8868\u94c1\u78c1\u6027\uff0c\u7f29\u5199P\u4ee3\u8868\u987a\u78c1\u6027\u3002<\/p>\n \uff08c\uff09\u76f8\u5bf9\u78c1\u5316\u5f3a\u5ea6\u4e0e\u76f8\u5bf9\u6e29\u5ea6\u51fd\u6570\u5173\u7cfb\u66f2\u7ebf\uff0c\u76f8\u5173\u6570\u636e\u6765\u6e90\u4e0e\u56fea\u3002<\/p>\n \uff08d\uff09\u91d1\u5c5eFe\u3001Co\u3001Ni\u7684\u6807\u51c6\u78c1\u5316\u5f3a\u5ea6\u4e0e\u6e29\u5ea6\u7684\u66f2\u7ebf\uff08\u5206\u6563\u7684\u7b26\u53f7\uff09\u548c\u8fd0\u7528\u5e03\u91cc\u6e0a\u51fd\u6570\uff08J=0.5\uff09\u7684\u8ba1\u7b97\u7ed3\u679c\uff08\u9ed1\u7ebf\uff0c\u6839\u636e\u53c2\u80037\u91cd\u753b\uff09\u3002<\/p>\n \u56fe<\/strong>2 <\/strong>\u78c1\u81f4\u4f38\u7f29\u53ca\u5176\u70ed\u7a33\u5b9a\u6027<\/strong><\/p>\n \uff08a\uff09 \u56fa\u6eb6\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u548c\u9648\u5316\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u78c1\u81f4\u4f38\u7f29\u7387\u4e0e\u5916\u78c1\u573a\u5f3a\u5ea6\u5173\u7cfb\u66f2\u7ebf\uff0c\u9ed1\u7ebf\u4ee3\u8868\u53ea\u56fa\u6eb6\u5904\u7406\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\uff0c\u7ea2\u7ebf\u4ee3\u8868\u56fa\u6eb6\u53ca\u9648\u5316\u5904\u7406\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\u3002<\/p>\n \uff08b\uff09\u9648\u5316\u5408\u91d1\u548c\u5408\u91d1-D\u78c1\u81f4\u4f38\u7f29\u7387\u4e0e\u6e29\u5ea6\u5173\u7cfb\u66f2\u7ebf\uff0c\u7ea2\u8272\u7b26\u53f7\u4ee3\u8868\u9648\u5316\u5408\u91d1\uff0c\u7eff\u8272\u7b26\u53f7\u4ee3\u8868\u5408\u91d1-D\uff0cb\u4e2d\u7684\u63d2\u56fe\u662f\u9648\u5316\u540e\u7684\u5408\u91d1\u5728\u4f4e\u78c1\u573a\u4e0b\u7b49\u6e29\u78c1\u5316\u5f3a\u5ea6\u56de\u7ebf\u3002<\/p>\n \u56fe<\/strong>3 <\/strong>\u56fa\u6eb6\u5904\u7406\u540e\u7684<\/strong>Fe73<\/sub>Ga27<\/sub><\/strong>\u5408\u91d1\u7684\u7ed3\u6784\u8868\u5f81<\/strong><\/p>\n \uff08a\uff09\u7531\u8d85\u6676\u683c\u70b9\u9635\uff0811\uff09\u9762\u4f5c\u4e3a\u53cd\u5c04\u9762\u6240\u5f97\u5230\u7684\u6697\u573a\u76f8\uff0c\u63d2\u56fe\u662f\u76f8\u5e94\u7684\u9009\u533a\u7535\u5b50\u884d\u5c04\u82b1\u6837\u56fe\uff08\u7535\u5b50\u5165\u5c04\u6cbf\u7740 [111] \u6676\u5e26\u8f74\u65b9\u5411\uff09\u3002<\/p>\n \uff08b\uff09\u5236\u5f97\u7684\u6837\u54c1\u672a\u7ecf\u8fc7\u5176\u5b83\u5904\u7406\u7684XRD\u884d\u5c04\u56fe\u8c31\uff08\u9ed1\u8272\u66f2\u7ebf\uff09\u548c\u5176\u5728723K\u6e29\u5ea6\u4e0b\u70ed\u5904\u74060.5h\u540e\u6dec\u706b\u5f97\u5230\u7684\u6837\u54c1\u7684XRD\u884d\u5c04\u56fe\u8c31\uff08\u84dd\u8272\u66f2\u7ebf\uff09\u3002\u4e3b\u8981\u884d\u5c04\u5cf0\u7684\u6307\u6807\u5316\u662f\u4ee5DO3<\/sub>\uff08\u7a7a\u95f4\u7fa4\u4e3aFm3m\uff09\u4f5c\u4e3a\u53c2\u8003\uff08\u7f29\u5199\u4e3abcc\uff09\uff0c\u5176\u5b83\u5cf0\u5c5e\u4e8eL12<\/sub>\u76f8\uff08\u7f29\u5199\u4e3afcc\uff09\u3002<\/p>\n \uff08c\uff09DO3<\/sub>\u7ed3\u6784\u548cL12<\/sub>\u7ed3\u6784\u7684\u8d1d\u6069\u5173\u7cfb\uff0c\u6bd4\u4f8b\u5c3a\u4e3a50nm\u3002<\/p>\n \u56fe<\/strong>4 <\/strong>\u9648\u5316<\/strong>Fe73<\/sub>Ga27<\/sub><\/strong>\u5408\u91d1\u7684\u5e73\u5747\u76f8\u7ed3\u6784\u6f14\u53d8<\/strong><\/p>\n \uff08a\uff09\u53d8\u6e29\u539f\u4f4d\u6b65\u626bXRD\u884d\u5c04\u56fe\u8c31\uff0c\u884d\u5c04\u89d22\u03b8\u8303\u56f4\u662f41-46\u5ea6\uff0c{111}\u884d\u5c04\u5cf0\u4ee3\u8868L12<\/sub>\u76f8\u800c{220}\u884d\u5c04\u5cf0\u4ee3\u8868DO3<\/sub>\u76f8\uff0c\u7bad\u5934\u8868\u793a\u5cf0\u4f4d\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n \uff08b\uff09L12<\/sub>\u76f8\u542b\u91cf\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u5173\u7cfb\u66f2\u7ebf\u548c\u4e24\u76f8\u6676\u683c\u53c2\u6570\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u5173\u7cfb\u66f2\u7ebf\u3002<\/p>\n \u56fe<\/strong>5<\/strong>\u5ba4\u6e29\u4e0b\u9648\u5316<\/strong>Fe73<\/sub>Ga27<\/sub><\/strong>\u5408\u91d1\u7684\u5fae\u89c2\u7ed3\u6784<\/strong><\/p>\n \uff08a\uff09\u6cbf\u7740[110]fcc<\/sub>\u6676\u5e26\u8f74\u5165\u5c04\u7684\u9009\u533a\u7535\u5b50\u884d\u5c04\u56fe\uff0c\u8868\u660e\u6837\u54c1\u7684\u57fa\u76f8\u4e3aL12<\/sub>\u76f8\u800c\u7b2c\u4e8c\u76f8\u4e3abcc\u76f8\u3002<\/p>\n \uff08b\uff09L12<\/sub>\u76f8\uff08\u9ed1\uff09\u548cDO3<\/sub>\u76f8\uff08\u84dd\uff09\u4f4d\u5411\u5173\u7cfb\u3002<\/p>\n \uff08c\uff09\u7535\u5b50\u6cbf\u7740 [001]fcc <\/sub>\u65b9\u5411\u5165\u5c04\u6240\u5f97\u5230\u7684\u660e\u573a\u76f8\u3002<\/p>\n \uff08d\uff09\u4ee5\u8d85\u6676\u683c\u70b9\u9635\uff0800\uff09fcc<\/sub>\u4f5c\u4e3a\u53cd\u5c04\u9762\u6240\u5f97\u5230\u7684\u6697\u573a\u76f8\uff0c\u663e\u793a\u7684\u662fa\u56fe\u4e2d\u7ea2\u8272\u7bad\u5934\u6240\u6307\u7684\u533a\u57df\uff0c\u56fec\u548cd\u7684\u6bd4\u4f8b\u5c3a\u90fd\u662f200nm\u3002<\/p>\n \u56fe<\/strong>6<\/strong>\u9648\u5316<\/strong>Fe73<\/sub>Ga27<\/sub><\/strong>\u5408\u91d1\u7684\u5fae\u89c2\u7ed3\u6784\u6f14\u53d8<\/strong><\/p>\n \u539f\u4f4d\u900f\u5c04\u7535\u955c\u8868\u5f81\uff08a ,b\uff09\u6d4b\u8bd5\u6e29\u5ea6298K\uff08c ,d\uff09\u6d4b\u8bd5\u6e29\u5ea6473K\uff08e ,f\uff09\u6d4b\u8bd5\u6e29\u5ea6573K\uff08g,f\uff09\u6d4b\u8bd5\u6e29\u5ea6673K\u3002\u6240\u6709\u660e\u573a\u76f8\u90fd\u662f\u901a\u8fc7\u503e\u659c\u6676\u7c921\uff08\u7ea2\u8272\u865a\u7ebf\u6846\u533a\u57df\uff09\u6765\u83b7\u5f97\u7684\uff0c\u7535\u5b50\u5165\u5c04\u65b9\u5411\u4e3a [112]fcc<\/sub> \u6676\u5e26\u8f74\u65b9\u5411\uff0c\u56feb\u662f298K\u6e29\u5ea6\u4e0b\u9009\u533a\u7535\u5b50\u884d\u5c04\u56fe\u6837\u3002<\/p>\n (d, f, h) \u662f\u56fe (c,e,g) \u7ea2\u8272\u865a\u7ebf\u6846\u7684\u653e\u5927\uff0c\u5176\u4e2d\u6676\u7c922\u8f6c\u5316\u533a\u57df\uff08fcc\uff09\u548c\u672a\u8f6c\u5316\u533a\u57df\uff08bcc\uff09\u754c\u9762\u7528\u767d\u8272\u865a\u7ebf\u8868\u793a\uff0c\u5176\u663e\u793a\u968f\u7740\u6e29\u5ea6\u7684\u5347\u9ad8\uff0cfcc\u76f8\u542b\u91cf\u5728\u4e0a\u5347\u3002\u6bd4\u4f8b\u5c3a\uff0c500nm\uff08a\uff0cc\uff0ce, g\uff09, 100nm (d,\u00a0 f,\u00a0 h) \u3002<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u56fa\u6eb6\u5904\u7406\u540e\u7684Fe73<\/sub>Ga27<\/sub>\u5408\u91d1\uff0c\u5728803K\u7684\u6e29\u5ea6\u4e0b\u70ed\u5904\u740612h\uff0c\u6240\u5236\u5f97\u7684\u94c1\u78c1\u6750\u6599\uff0c\u78c1\u5316\u5f3a\u5ea6\u548c\u78c1\u81f4\u4f38\u7f29\u7387\u90fd\u8f83\u9ad8\uff0c\u5177\u6709\u5f88\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\uff0c\u5176\u662f\u4e00\u79cd\u9887\u5177\u5e94\u7528\u524d\u666f\u7684\u9ad8\u6e29\u94c1\u78c1\u6750\u6599\uff0c\u53ef\u4ee5\u5927\u5927\u62d3\u5c55\u94c1\u78c1\u5e94\u7528\u3002\u5176\u5177\u6709\u9ad8\u70ed\u7a33\u5b9a\u6027\u673a\u7406\u4e3a\u968f\u7740\u6e29\u5ea6\u5347\u9ad8\uff0c\u6750\u6599\u4e2d\u4e00\u79cd\u78c1\u5316\u5f3a\u5ea6\u8f83\u4f4e\u76f8\u8f6c\u5316\u4e3a\u53e6\u4e00\u79cd\u78c1\u5316\u5f3a\u5ea6\u8f83\u9ad8\u7684\u76f8\uff0c\u8be5\u7406\u8bba\u4e3a\u8bbe\u8ba1\u548c\u5f00\u53d1\u65b0\u7684\u9ad8\u6e29\u94c1\u78c1\u6750\u6599\u6253\u4e0b\u57fa\u7840\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/strong>Highly thermal-stable ferromagnetism by a natural composite<\/a>\uff08Nat. Commun.\u00a0 , 2017, DOI:10.1038\/ncomms13937\uff09<\/p>\n \u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4yuyu88\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n \u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\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\u7f16\u8f91\u90e8<\/u><\/a>\u3002\u5982\u679c\u4f60\u5bf9\u7535\u5b50\u6750\u6599\u611f\u5174\u8da3\uff0c\u613f\u610f\u4e0e\u7535\u5b50\u7535\u5de5\u9886\u57df\u4eba\u624d\u4ea4\u6d41\uff0c\u8bf7\u52a0\u5165\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u6750\u6599\u5b66\u4e60\u5c0f\u7ec4\uff08QQ\u7fa4\uff1a482842474\uff09<\/p>\n<\/p>\n
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