| 查看: 522 | 回复: 2 | ||
lmcr铜虫 (小有名气)
|
[求助]
BiFeO3 薄膜的磁电系数是多大？ 已有1人参与
|
| 请问到目前为止，BiFeO3或者doped BFO 的磁电系数有多大？ |
回复此楼» 猜你喜欢
国社科申报系统有变化
已经有3人回复
-
售SCI一区T0P文章，我:8O.55.1.O.5.4,科目齐全,可+急
已经有5人回复
-
售SCI文章，我:8O.5.5.1O.54,科目全,可十急
已经有3人回复
-
售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急
已经有5人回复
-
售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急
已经有5人回复
-
售SCI一区文章，我:8.O.55.1.O.54,科目齐全,可伽急
已经有3人回复
-
售SCI文章，我:8O.5.5.1O.54,科目全,可十急
已经有5人回复
-
售SCI一区T0P文章，我:8.O.55.1.O54,科目全,可伽急
已经有6人回复
-
售一区SCI文章T0P，我:8O.551.O54,科目全,可十急
已经有5人回复
-
面上意见出来了
已经有16人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- ELF计算BiFeO3孤对电子的问题
已经有10人回复
- 求bifeo3掺杂tio2靶材制作步骤！！
已经有7人回复
- 化学浴法制备的无定型态CdS薄膜的紫外-可见光透射及吸光谱
已经有33人回复
- 固相烧结BiFeO3
已经有15人回复
- 多铁粉体还可以做些什么？
已经有4人回复
- （BiFeO3）GGA和LDA算出来的V0都比实验值小约10~20个立方埃？请各位高手帮我检查一下
已经有27人回复
- 【请教】制备的BiFeO3颗粒怎样测紫外可见吸收光谱
已经有27人回复
- 【求助】75BiFeO3-25BaTiO3 相结构如何分析与确定？晶格常数如何确定？
已经有6人回复
- 【求助】谁知道铁酸铋BiFeO3 粉末和 铁酸钴CoFe2O4 粉末的密度啊？？
已经有19人回复
【答案】应助回帖
感谢参与，应助指数 +1
mjx150: 感谢交流 2014-02-24 09:39:54
mjx150: 感谢交流 2014-02-24 09:39:54
|
In-plane dielectric and magnetoelectric studies of BiFeO3[Advanced Materials Physics] Ashok Kumar, J. F. Scott, R. Martínez, G. Srinivasan, and R. S. Katiyar The in-plane temperature dependent dielectric behavior of BiFeO3 (BFO) as-grown thin films shows diffuse but prominent phase transitions near 450 (±10) K and 550 K with dielectric-loss temperature dependences that suggest skin layer effects. The 450 K anomalies are near the “transition” first reported by Polomska et al. [Phys. Status Solidi 23, 567 (1974)]. The 550 K anomalies coincide with the surface phase transition recently reported by Xavi et al. [Phys. Rev. Lett. 106, 236101 (2011)]. In addition, anomalies are found at low temperatures: After several experimental cycles the dielectric loss shows a clear relaxor-like phase transition near what was previously suggested to be a spin reorientation transition (SRT) temperature (～201 K) for frequencies 1 kHz < f < 1 MHz which follow a nonlinear Vogel–Fulcher (V–F) relation; an additional sharp anomaly is observed near ～180 K at frequencies below 1 kHz. As emphasized recently by Cowley et al. [Adv. Phys. 60, 229 (2011)], skin effects are expected for all relaxor ferroelectrics. Using planar interdigital electrodes, Kumar et al. present experimental data and a theoretical model for the in-plane longitudinal and transverse direct magnetoelectric (ME) coefficients. Reasonably good ME coefficients (～300 mV/Oe cm in transverse and 2 V/Oe cm in longitudinal direction) are measured. Understanding of the in-plane phase transitions and ME behaviour may be helpful to design nanoscale and interfacial devices with high surface to volume ratios. Phys. Status Solidi A (2012) DOI 10.1002/pssa.201228154 |
2楼2013-11-24 10:34:07
huichangniu
木虫 (正式写手)
- 应助: 1 (幼儿园)
- 金币: 2485.7
- 散金: 200
- 红花: 1
- 帖子: 370
- 在线: 165.8小时
- 虫号: 1626666
- 注册: 2012-02-19
- 性别: GG
- 专业: 结构化学
3楼2014-02-23 20:27:43
投票:
10