Dielectric and ferroelectric properties of (1-x)PMN-(x)PT synthesized by co-precipitation method

ABSTRACT

The paper presents synthesis of (1-x)PMN-(x)PT (PMN-PT) near morphotropic phase boundary (MPB) i.e. for x = 0.25, 0.31, 0.33 and 0.35, using hydroxide co-precipitation method. Further, PMN-PT compositions under investigation were systematically characterized for density, structural, morphological, dielectric and ferroelectric properties. X-ray diffraction data reveals single phase formation of PMN-PT. The scanning electron microscopy (SEM) images were recorded and used to understand morphology of the samples. In present study, it was noted that the PMN-PT composition with x = 0.25 exhibits the maximum value of dielectric constant (ϵ) and saturation polarization (P_max) amongst the PMN-PT compositions under investigation.

KEYWORDS:

• Co-precipitation
• PMN-PT
• dielectrics
• ferroelectrics
• XRD
• SEM

Acknowledgment

Authors are thankful to UGC-DAE-CSR, Indore for availing ferroelectric measurement facility.

Funding

Dr. A. N. Tarale would like to acknowledge the UGC, New Delhi, India for the financial support under the scheme of Dr. D.S. Kothari postdoctoral fellowship.