| 查看: 638 | 回复: 1 | |||
47511208木虫 (小有名气)
|
[求助]
求翻译 已有1人参与
|
| The magnetic and magnetotransport properties of SrRuO3 epitaxial thin films grown on (001)-oriented SrTiO3 substrates by dc magnetron sputtering were studied in detail. The analysis of the electric transport data suggests a crossover from Fermi-liquid to non-Fermi-liquid behavior at similar to 50 K. Apart from this, a low-temperature upturn in the resistivity of the film is observed which is possibly associated with disorder-induced localization effects. Interestingly, the rho(T) in the paramagnetic state follows a T-1/2 dependence. This behavior is similar to that observed in bulk SRO single-crystals. Most strikingly, the temperature-dependent magnetoresistance exhibits two distinct dips (one around ferromagnetic ordering temperature and the other around 40 K), resembling a double-well potential in appearance. Concerning the magnetic behavior of the films, it is found that the low-temperature magnetization diminishes with increasing temperature due, probably, to thermally excited magnons as well as Stoner excitations. In turn, the magnetization near T-c follows the scaling law, M infinity(T-c - T)(alpha), with alpha approximate to 0.39. The magnitude of alpha seems to be consistent with three-dimensional (3D) Ising-type ferromagnetic behavior. (C) 2012 Elsevier Ltd. All rights reserved |
回复此楼» 猜你喜欢
286求调剂
已经有25人回复
-
22专硕求调剂
已经有8人回复
-
材料工程281还有调剂机会吗
已经有19人回复
-
药学305求调剂
已经有7人回复
-
290求调剂
已经有13人回复
-
085410 273求调剂
已经有8人回复
-
0831一轮调剂失败求助
已经有3人回复
-
271求调剂
已经有22人回复
-
求调剂，985材料与化工348分
已经有9人回复
-
344 材料专业 求调剂211 无地域要求
已经有5人回复
half好胖子
金虫 (正式写手)
雷锋
- 应助: 24 (小学生)
- 金币: 1351.7
- 红花: 2
- 帖子: 555
- 在线: 60.6小时
- 虫号: 2573320
- 注册: 2013-07-30
- 性别: GG
- 专业: 药物化学
【答案】应助回帖
感谢参与，应助指数 +1
| SrRuO3外延薄膜的磁性和磁输运性质（001）通过直流磁控溅射型SrTiO3衬底上进行了详细的研究。电动交通工具的数据分析表明，交叉的费米液体的非费米液体行为类似于50 K。除此之外，在膜的电阻率的低温复苏是观察这可能与疾病引起的定位效应。有趣的是，Rho（T）在顺磁状态如下的T1 / 2的依赖。这种行为是类似于散装SRO单晶中观察到的。最引人注目的是，依赖于温度的电阻表现出两种不同的倾角（一个在铁磁有序温度和其他约40 K），类似于双势阱的外观。对薄膜的磁行为，发现低温磁化强度随温度的升高而减少，可能，热激发的磁振子以及斯托纳激发。反过来，在T-C磁化如下的标度律，M无穷大（T-C - T）（α），α近似为0.39。α的大小似乎是一致的三维（3D）型伊辛铁磁行为。（C）2012 Elsevier公司保留所有权 |
2楼2014-02-26 10:12:34
