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首页> 外文期刊>Physica, B. Condensed Matter >Structural, optical and magnetic properties of Nd-doped BiFeO_3 thin films prepared by pulsed laser deposition
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Structural, optical and magnetic properties of Nd-doped BiFeO_3 thin films prepared by pulsed laser deposition

机译：脉冲激光沉积制备掺钕BiFeO_3薄膜的结构，光学和磁性

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摘要

Nd-doped BiFeO_3 thin films were grown by pulsed laser deposition on quartz substrate and their structural, optical and magnetic properties have been studied. X-ray diffraction analysis revealed that Nd addition caused structural distortion even with 5% of Nd concentration, additional secondary phase appeared in all samples but its intensity was greatly reduced with Nd addition. Doping-induced variations in texture and structure modifying both magnetic and optical properties of BiFeO_3 thin films. The energy band gap decreases while the refractive index increases with addition of Nd ~3 in BiFeO_3 for Bi~3. These variations in energy band gap and refractive index have been explained on the basis of density of states and increase in disorders in the system. All the samples were found to exhibit ferromagnetism at room temperature and the saturation magnetization increases with the increase in structural distortion with addition of Nd. Finally, Nd-doping modifies the physical properties of BiFeO_3 in comparison to undoped BiFeO_3 thin films.
机译：Nd掺杂的BiFeO_3薄膜通过脉冲激光沉积在石英衬底上生长，并对其结构，光学和磁性进行了研究。 X射线衍射分析表明，即使添加5％的Nd，添加Nd也会引起结构变形，所有样品中都出现了额外的第二相，但是添加Nd使其强度大大降低。掺杂引起的织构和结构变化会改变BiFeO_3薄膜的磁性和光学性质。对于Bi〜3，随着BiFeO_3中Nd〜3的添加，能带隙减小而折射率增加。能带隙和折射率的这些变化已经根据状态密度和系统中无序性的增加进行了解释。发现所有样品在室温下均表现出铁磁性，并且随着添加Nd，饱和磁化强度随着结构变形的增加而增加。最后，与未掺杂的BiFeO_3薄膜相比，掺Nd会改变BiFeO_3的物理性能。

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