Growth of heteroepitaxial La and Mn co-substituted BiFeO3 thin films on Si (100) substrate by pulsed laser deposition

被引：0
作者：
Jayant Kolte
Prakash Gopalan
机构：
[1] Thapar Institute of Engineering and Technology,School of Physics and Materials Science
[2] Thapar Institute of Engineering and Technology,undefined
来源：
Applied Physics A | 2022年 / 128卷
关键词：
Multiferroics; Thin films; Leakage current mechanism; Ferroelectric loop; Pulsed laser deposition; AC conductivity analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work, heteroepitaxial Bi0.90La0.10Fe0.95Mn0.05O3 (BLFMO) thin films have been grown on Si (100) substrate using LaNiO3/CeO2/Y0.08Zr0.92O3 buffer layers and on SrTiO3 (STO) substrate using pulsed laser deposition. SrRuO3 (SRO) has been used as a bottom electrode in both cases. AC conductivity analysis reveals that BLFMO films deposited on SrTiO3 (STO) substrate are governed by translational hopping, while those deposited on Si are governed by relocalized reorientation hopping. Also, films on STO have DC conductivity dominance over the low frequency range. The remnant polarization for the films deposited on Si and STO is 24 and 66 µC/cm2, while the coercive field is 280 kV/cm and 251 kV/cm, respectively. Impedance and modulus analysis reveals that both the samples show electrical heterogeneity. The leakage current mechanism can be well explained using space charge limited current (SCLC) and Fowler–Nordheim (FN) conduction mechanism for films deposited on all substrates. Films deposited on STO have Schottky behavior at low field and SCLC and FN tunneling current mechanism.
引用
收藏
相关论文
共 248 条
  • [1] Hill NA(1999)First-principles investigation of ferromagnetism and ferroelectricity in bismuth manganite Phys. Rev. B 59 8759-6709
  • [2] Rabe KM(2000)Why are there so few magnetic ferroelectrics? J. Phys. Chem. B 104 6694-58
  • [3] Hill NA(2003)Magnetic control of ferroelectric polarization Nature 426 55-2011
  • [4] Kimura T(2014)BiFeO J. Am. Ceram. Soc. 97 1993-1014
  • [5] Goto T(2012) ceramics: processing, electrical, and electromechanical properties Mater. Sci. Forum. 702 1011-1722
  • [6] Shintani H(2015)Microstructural characterization of ferroelectric bismuth ferrite (BiFeO AIP Adv. 5 097164-367
  • [7] Ishizaka K(2003)) ceramic by electron backscattered diffraction Science 299 1719-173
  • [8] Arima T(2005)Impedance and AC conductivity study of nano crystalline, fine grained multiferroic bismuth ferrite (BiFeO J. Phys. D Appl. Phys. 38 R123-59
  • [9] Tokura Y(2005)), synthesized by microwave sintering Nature 434 364-2485
  • [10] Rojac T(2004)Epitaxial BiFeO Phys. Rev. Lett. 93 169-507
12345678910