{"id":171802,"date":"2019-04-10T06:30:10","date_gmt":"2019-04-09T22:30:10","guid":{"rendered":"\/\/m.iemloyee.com\/?p=171802"},"modified":"2019-04-10T20:08:04","modified_gmt":"2019-04-10T12:08:04","slug":"%e5%9b%bd%e5%a4%96%e6%9c%aa%e6%a0%a1%e7%a8%bf-acta-mater-%e7%bb%93%e6%99%b6%e6%b6%b2%e6%80%81%e9%87%91%e5%b1%9e%e8%86%9c%e4%b8%ad%e4%ba%a7%e7%94%9f%e7%9a%84%e6%99%b6%e6%a0%b8%e7%9a%84%e7%bb%93","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=171802","title":{"rendered":"Acta Mater.: \u7ed3\u6676\u6db2\u6001\u91d1\u5c5e\u819c\u4e2d\u4ea7\u751f\u7684\u6676\u6838\u7684\u7ed3\u6784\u548c\u5f62\u6001"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n \u91d1\u5c5e\u73bb\u7483\u4e3b\u8981\u901a\u8fc7\u5c06\u5e73\u8861\u7194\u4f53\u5feb\u901f\u51b7\u5374\u81f3\u8fdc\u4f4e\u4e8e\u7194\u5316\u6e29\u5ea6Tm<\/sub>\u7684\u6e29\u5ea6\u6765\u5236\u5907\uff0c\u4ece\u800c\u907f\u514d\u6216\u663e\u8457\u51cf\u6162\u7ed3\u6676\u3002\u91d1\u5c5e\u73bb\u7483\u7279\u5b9a\u7684\u5149\u5b66\u3001\u78c1\u6027\u548c\u673a\u68b0\u6027\u80fd\u4e3b\u8981\u53d6\u51b3\u4e8e\u5176\u5fae\u89c2\u7ed3\u6784\uff0c\u5e76\u4e14\u8fd8\u53d6\u51b3\u4e8e\u7ed3\u6676\u5939\u6742\u7269\u7684\u5b58\u5728\u3002\u81ea\u4e0a\u4e16\u7eaa80\u5e74\u4ee3\u4ee5\u6765\uff0c\u7cfb\u7edf\u7684\u65e0\u5b9a\u5f62\u72b6\u6001\u6210\u4e3a\u4ea7\u751f\u5177\u6709\u6240\u9700\u7ed3\u6784\u548c\u5f62\u6001\u7279\u6027\u7684\u7eb3\u7c73\u6676\u4f53\u6837\u54c1\u7684\u521d\u59cb\u6001\u3002\u73bb\u7483\u7cfb\u7edf\u7684\u518d\u52a0\u70ed\u4ee5\u53ca\u5916\u90e8\u538b\u529b\u65bd\u52a0\u662f\u63a7\u5236\u6676\u4f53\u6210\u6838\u3001\u751f\u957f\u8fc7\u7a0b\u4ee5\u53ca\u6676\u6838\u7684\u7ed3\u6784\u548c\u5f62\u6001\u7684\u57fa\u672c\u65b9\u5f0f\u3002\u5c3d\u7ba1\u5728\u7814\u7a76\u73bb\u7483\u6750\u6599\u7684\u76f8\u53d8\u65b9\u9762\u53d6\u5f97\u6210\u529f\uff0c\u4f46\u76ee\u524d\u8fd8\u6ca1\u6709\u6e05\u695a\u5730\u4e86\u89e3\u8fc7\u51b7\u5bf9\u65b0\u51fa\u73b0\u7684\u6676\u6838\u7ed3\u6784\u7279\u5f81\u53ca\u5176\u5f62\u8c8c\u7279\u5f81\u7684\u5f71\u54cd\uff0c\u5982\u6838\u5927\u5c0f\u3001\u5f62\u72b6\u4ee5\u53ca\u56fa\u6db2\u754c\u9762\u7684\u7ed3\u6784\u7279\u5f81\u3002\u5bf9\u6210\u6838\u548c\u751f\u957f\u8fc7\u7a0b\u8fdb\u884c\u7cbe\u786e\u5efa\u6a21\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u8fc7\u51b7\u5bf9\u7ed3\u6676\u6838\u7684\u7ed3\u6784\u548c\u5f62\u6001\u7684\u5f71\u54cd\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u4fc4\u7f57\u65af\u5580\u5c71\u8054\u90a6\u5927\u5b66Bulat N. Galimzyanov\u6559\u6388(\u901a\u8baf\u4f5c\u8005)\u7b49<\/strong>\u7814\u7a76\u4e86\u8fc7\u51b7\u5bf9\u6db2\u6001\u91d1\u5c5e\u8584\u819c\u5185\u51fa\u73b0\u3001\u751f\u957f\u7684\u6676\u6838\u7ed3\u6784\u3001\u5f62\u8c8c\u7684\u5f71\u54cd\uff0c\u5e76\u5728Acta Mater.\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cStructure and morphology of crystalline nuclei arising in a crystallizing liquid metallic film<\/strong>\u201d\u7684\u7814\u7a76\u8bba\u6587\u3002\u805a\u7c7b\u5206\u6790\u53ef\u8ba1\u7b97\u884d\u5c04\u56fe\u8c31\u5e76\u8bc4\u4f30\u5728\u4e0d\u540c\u8fc7\u51b7\u6c34\u5e73\u4e0b\u7cfb\u7edf\u4e2d\u51fa\u73b0\u7684\u6676\u6838\u7684\u5f62\u8c8c\u7279\u5f81(\u5747\u5300\u90e8\u5206\u7684\u7ebf\u6027\u5c3a\u5bf8\u548c\u8868\u9762\u5c42\u7684\u539a\u5ea6)\u3002\u4f5c\u8005\u53d1\u73b0\u5728\u76f8\u5e94\u4e8e\u4f4e\u8fc7\u51b7\u6c34\u5e73\u7684\u6e29\u5ea6\u4e0b\u7684\u6db2\u6001\u91d1\u5c5e\u819c\u7ed3\u6676\u6210\u5355\u6676\uff0c\u800c\u591a\u6676\u7ed3\u6784\u5728\u6df1\u8fc7\u51b7\u5374\u6c34\u5e73\u4e0b\u5f62\u6210\u3002\u6676\u6838\u4e34\u754c\u5c3a\u5bf8\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u5305\u542b\u4e24\u4e2a\u53ef\u8fa8\u522b\u7684\u533a\u57df\uff0c\u4ea4\u53c9\u6e29\u5ea6T\/Tg<\/sub>=1.15(Tg<\/sub>\u662f\u73bb\u7483\u5316\u8f6c\u53d8\u6e29\u5ea6)\uff0c\u8fd9\u662f\u7531\u4e8e\u7cfb\u7edf\u7684\u7279\u5b9a\u51e0\u4f55\u5f62\u72b6\u800c\u51fa\u73b0\u7684\u3002<\/p>\n \u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong><\/p>\n \u56fe1 \u6a21\u62df\u6676\u80de\u7684\u793a\u610f\u56fe<\/strong><\/p>\n \u5177\u670914700\u4e2a\u9897\u7c92\u7684\u6a21\u62df\u6676\u80de\u793a\u610f\u56fe\uff0c\u5176\u4e2d\u5468\u671f\u6027\u8fb9\u754c\u6761\u4ef6\u5e94\u7528\u4e8ex\u548cy\u65b9\u5411\uff0c Lz<\/sub>=4.8\u03c3\u662f\u8584\u819c\u7684\u5bbd\u5ea6\u3002<\/p>\n \u56fe2 \u4e0d\u540c\u6e29\u5ea6\u3001\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167<\/strong><\/p>\n a) T= 1.4\u03b5\/kB<\/sub>\u4e0b\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167\uff0c\u5176\u4e2d\u7ed3\u6676\u7ed3\u6784\u7684\u56fa\u4f53\u72b6\u9897\u7c92\u7528\u7ea2\u8272\u6807\u8bb0\uff0c\u800c\u8868\u9762\u9897\u7c92\u7528\u7eff\u8272\u6807\u8bb0\uff0c\u5f62\u6210\u65e0\u5e8f\u76f8\u7684\u9897\u7c92\u7528\u7070\u8272\u6807\u8bb0(\u4e0b\u540c)\uff1b \u56fe3 \u6e29\u5ea6T= 0.5\u03b5\/kB<\/sub>\u4e0b\u3001\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167<\/strong><\/p>\n a) \u6ca1\u6709\u7ed3\u6676\u4e2d\u5fc3\u7684\u73bb\u7483\u4f53\u7cfb\u5728\u6e29\u5ea6T= 0.5\u03b5\/kB<\/sub>\u4e0b\u7684\u5feb\u7167\uff1b \u56fe4 \u6e29\u5ea6T= 1.4\u03b5\/kB<\/sub>\u4e0b\u3001\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167<\/strong><\/p>\n a) \u542b\u6709\u4e00\u4e2a\u6676\u6838\u7684\u7cfb\u7edf\u7684\u4e24\u76f8\u72b6\u6001\u5728\u6e29\u5ea6T= 1.4\u03b5\/kB<\/sub>\u4e0b\u7684\u5feb\u7167\uff1b \u56fe5 \u6210\u6838\u7b49\u5f85\u65f6\u95f4\u548c\u6676\u6838\u7684\u4e34\u754c\u5c3a\u5bf8<\/strong><\/p>\n \u4e34\u754c\u5c3a\u5bf8\u6838\u7684\u7b49\u5f85\u65f6\u95f4\u03c4c\u968f\u6e29\u5ea6T\u7684\u53d8\u5316\uff0c\u5185\u63d2\u4e3a\u5728Dzugutov\u7cfb\u7edf(Dz<\/sub>)\u7ed3\u6676\u65f6\u83b7\u5f97\u7684(T\/Tg<\/sub>)\u5bf9\u964d\u4f4e\u7684\u4e34\u754c\u5c3a\u5bf8nc<\/sub>(T)\/nc<\/sub>(Tg<\/sub>)\u7684\u5f71\u54cd[\u5176\u4e2dnc<\/sub>(Tg<\/sub>)\u662f\u73bb\u7483\u5316\u8f6c\u53d8\u6e29\u5ea6Tg<\/sub>\u4e0b\u7684\u4e34\u754c\u5c3a\u5bf8]\u3002<\/p>\n \u56fe6 \u7ed3\u6676\u57df\u7684\u5f62\u8c8c<\/strong><\/p>\n \u4e0a\u56fe\uff1a\u5b9e\u7ebf\u662fN(R\/R0<\/sub>)\uff0c\u865a\u7ebf\u662f\u5fae\u5546\u2202N\/\u2202(R\/R0<\/sub>)\uff1b \u56fe7 \u6838\u534a\u5f84Rcl<\/sub>\u3001\u5747\u76f8\u534a\u5f84Rv<\/sub>\u548c\u8868\u9762\u5c42\u7684\u539a\u5ea6dsurf<\/sub>\u968f\u6e29\u5ea6\u7684\u53d8\u5316<\/strong><\/p>\n a) \u4e34\u754c\u5c3a\u5bf8\u6838\u7684\u6838\u534a\u5f84Rcl<\/sub>\u3001\u5747\u76f8\u534a\u5f84Rv<\/sub>\u548c\u8868\u9762\u5c42\u7684\u539a\u5ea6dsurf<\/sub>\u968f\u6e29\u5ea6\u7684\u53d8\u5316\uff1b<\/p>\n b) \u542b\u6709Nc<\/sub>=200\u4e2a\u9897\u7c92\u6838\u7684\u7684\u6838\u534a\u5f84Rcl<\/sub>\u3001\u5747\u76f8\u534a\u5f84Rv<\/sub>\u548c\u8868\u9762\u5c42\u7684\u539a\u5ea6dsurf<\/sub>\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \n \u7efc\u4e0a\u6240\u8ff0\uff0c\u8be5\u5de5\u4f5c\u7684\u7ed3\u679c\u6709\u52a9\u4e8e\u7406\u89e3\u8fc7\u51b7\u6db2\u4f53\u548c\u73bb\u7483\u4f53\u7cfb\u4e2d\u76f8\u53d8\u673a\u7406\uff0c\u5e76\u4e14\u8be5\u7ed3\u679c\u53ef\u7528\u4e8e\u5236\u5907\u5177\u6709\u6240\u9700\u7ed3\u6784\u548c\u5f62\u8c8c\u7279\u6027\u7684\u7eb3\u7c73\u6676\u4f53\u3002\u6b64\u5916\uff0c\u8be5\u7814\u7a76\u7ed3\u679c\u53ef\u8fdb\u4e00\u6b65\u6269\u5c55\u5982\u4e0b\uff1a\u2460\u7ed3\u6676\u91d1\u5c5e\u819c\u7684\u7ed3\u6784\u7531\u6bcd\u6db2\u6837\u54c1\u7684\u8fc7\u51b7\u5374\u6c34\u5e73\u786e\u5b9a\uff0c\u56e0\u6b64\u53ef\u4ee5\u5408\u7406\u5730\u9884\u671f\u8fd9\u4e9b\u7ed3\u6676\u819c\u5c06\u5177\u6709\u4e0e\u7535\u5b50\u4f20\u5bfc\u6027\u548c\u673a\u68b0\u5f3a\u5ea6\u76f8\u5173\u7684\u7279\u5b9a\u7279\u5f81\uff1b\u2461\u5bf9\u7ed3\u6676\u8584\u819c\u7684\u8868\u9762\u6027\u8d28\u8fdb\u884c\u8fdb\u4e00\u6b65\u63a2\u7a76\u53ef\u80fd\u4f1a\u83b7\u5f97\u610f\u60f3\u4e0d\u5230\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n
<\/p>\n
\n b) T= 0.9\u03b5\/kB<\/sub>\u4e0b\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167\uff1b
\n c) T= 0.5\u03b5\/kB<\/sub>\u4e0b\u4e0d\u540c\u65f6\u523b\u7cfb\u7edf\u7684\u5feb\u7167\u3002<\/p>\n<\/p>\n
\n b) \u542b\u6709\u6676\u6838\u7684\u7cfb\u7edf\u7684\u4e24\u76f8\u72b6\u6001\u5728\u6e29\u5ea6T= 0.5\u03b5\/kB<\/sub>\u4e0b\u7684\u5feb\u7167\uff1b
\n c) \u7531\u5206\u5f00\u7684\u7ed3\u6676\u57df\u7ec4\u6210\u7684\u591a\u6676\u4f53\u7cfb\u5728\u6e29\u5ea6T= 0.5\u03b5\/kB<\/sub>\u4e0b\u7684\u5feb\u7167\uff1b
\n d) \u73bb\u7483\u4f53\u7cfb\u7684S(kx<\/sub>, ky<\/sub>)-\u6295\u5f71\uff1b
\n e) \u4e24\u76f8\u4f53\u7cfb\u7684S(kx<\/sub>, ky<\/sub>)-\u6295\u5f71\uff1b
\n f) \u591a\u6676\u4f53\u7cfb\u7684S(kx<\/sub>, ky<\/sub>)-\u6295\u5f71\uff0c\u5185\u63d2\u4e3a\u901a\u8fc7\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u83b7\u5f97\u7684\u591a\u6676\u7b94\u884d\u5c04\u56fe\u6848\u3002<\/p>\n<\/p>\n
\n b) \u5355\u6676\u5728\u6e29\u5ea6T= 1.4\u03b5\/kB<\/sub>\u4e0b\u7684\u5feb\u7167\uff1b
\n c) \u4e24\u76f8\u7cfb\u7edf\u7684S(kx<\/sub>, ky<\/sub>)-\u6295\u5f71\uff1b
\n d) \u5355\u6676\u7684S(kx<\/sub>, ky<\/sub>)-\u6295\u5f71\uff0c\u5185\u63d2\u4e3a\u901a\u8fc7\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u83b7\u5f97\u7684\u94dd\u5355\u6676\u884d\u5c04\u56fe\u6848\u3002<\/p>\n<\/p>\n
<\/p>\n
\n \u4e0b\u56fe\uff1aNcl<\/sub>=1568\u4e2a\u7c92\u5b50\u6676\u6838\u5c3a\u5bf8\u548c\u534a\u5f84Rcl<\/sub>=14\u03c3\uff0c\u6807\u51fa\u4e86\u534a\u5f84Rd<\/sub>\u7684\u6838\u5fc3\u7403\u5f62\u533a\u57df\u3001\u7ebf\u6027\u5c3a\u5bf82Rv<\/sub>\u7684\u5747\u5300\u90e8\u5206\u548c\u8868\u9762\u5c42\u7684\u539a\u5ea6dsurf<\/sub>\u3002<\/p>\n<\/p>\n