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Title: Pressure-induced transformations of multiferroic relaxor PbFe 0.5Nb 0.5O 3

Abstract

The effects of hydrostatic pressure at ambient temperature on the structural and dielectric properties of PbFe 0.5Nb 0.5O 3 (PFN) were investigated using second harmonic generation (SHG) and powder x-ray diffraction measurements to 31 GPa. The results demonstrate that PFN undergoes a pressure-induced structural transition from the R3$m$ ferroelectric to the $R$$\bar{3}m$$ paraelectric phase. SHG measurements showed a continuous decrease in the signal with pressure and complete disappearance at 7.1 GPa. Effective nonlinear optical coefficients were determined from the SHG data, and their pressure behavior was used to infer the nature of the transition. The loss of the SHG signal is accompanied by drastic changes in line widths of Bragg reflections, but no discontinuous change in volume was observed. The pressure-volume data were fit to various equations of state, and a bulk modulus $$K_0$$ = 136 (±2) GPa, bulk modulus pressure derivative $$K_0$$ ' = 4.0 (±0.2), and initial volume $$V_0$$ = 64.5 (±0.1) Å 3 were obtained.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [1];  [2]
  1. Carnegie Inst. of Washington, Washington, DC (United States)
  2. George Washington Univ., Washington, DC (United States)
  3. Howard Univ., Washington, DC (United States); Carnegie Inst. of Washington, Washington, DC (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); US Department of the Navy, Office of Naval Research (ONR)
OSTI Identifier:
1427834
Alternate Identifier(s):
OSTI ID: 1422661
Grant/Contract Number:  
AC02-06CH11357; NA-0002006; SC0001057
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 123; Journal Issue: 8; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; Hydrostatics; Ferroelectricity; X-ray diffraction; Bulk modulus; Dielectric materials; Multiferroics; Nonlinear optics; Second; harmonic generation; Dielectric properties; Bragg reflection

Citation Formats

Basu, Abhisek, Ahart, Muhtar, Holtgrewe, Nicholas, Lin, Chuanlong, and Hemley, Russell J. Pressure-induced transformations of multiferroic relaxor PbFe0.5Nb0.5O3. United States: N. p., 2018. Web. doi:10.1063/1.5019485.
Basu, Abhisek, Ahart, Muhtar, Holtgrewe, Nicholas, Lin, Chuanlong, & Hemley, Russell J. Pressure-induced transformations of multiferroic relaxor PbFe0.5Nb0.5O3. United States. doi:10.1063/1.5019485.
Basu, Abhisek, Ahart, Muhtar, Holtgrewe, Nicholas, Lin, Chuanlong, and Hemley, Russell J. Mon . "Pressure-induced transformations of multiferroic relaxor PbFe0.5Nb0.5O3". United States. doi:10.1063/1.5019485. https://www.osti.gov/servlets/purl/1427834.
@article{osti_1427834,
title = {Pressure-induced transformations of multiferroic relaxor PbFe0.5Nb0.5O3},
author = {Basu, Abhisek and Ahart, Muhtar and Holtgrewe, Nicholas and Lin, Chuanlong and Hemley, Russell J.},
abstractNote = {The effects of hydrostatic pressure at ambient temperature on the structural and dielectric properties of PbFe0.5Nb0.5O3 (PFN) were investigated using second harmonic generation (SHG) and powder x-ray diffraction measurements to 31 GPa. The results demonstrate that PFN undergoes a pressure-induced structural transition from the R3$m$ ferroelectric to the $R$$\bar{3}m$ paraelectric phase. SHG measurements showed a continuous decrease in the signal with pressure and complete disappearance at 7.1 GPa. Effective nonlinear optical coefficients were determined from the SHG data, and their pressure behavior was used to infer the nature of the transition. The loss of the SHG signal is accompanied by drastic changes in line widths of Bragg reflections, but no discontinuous change in volume was observed. The pressure-volume data were fit to various equations of state, and a bulk modulus $K_0$ = 136 (±2) GPa, bulk modulus pressure derivative $K_0$' = 4.0 (±0.2), and initial volume $V_0$ = 64.5 (±0.1) Å3 were obtained.},
doi = {10.1063/1.5019485},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 8,
volume = 123,
place = {United States},
year = {2018},
month = {2}
}

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