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Title: Ferroelectricity in Pb1+δZrO3 Thin Films

Journal Article · · Chemistry of Materials
 [1];  [2];  [1];  [1];  [3];  [1];  [1];  [1]; ORCiD logo [1];  [4];  [5];  [6]; ORCiD logo [7]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry, Materials Sciences Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source; Univ. of Science and Technology, Hefei (China). National Sychrotron Radiation Lab., CAS Key Lab. of Materials for Energy Conversion
  4. Univ. of California, Berkeley, CA (United States). Dept. of Electrical Engineering
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
  6. Kavli Energy NanoSciences Inst., Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry, Materials Sciences Division
  7. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division

© 2017 American Chemical Society. Antiferroelectric PbZrO 3 is being considered for a wide range of applications where the competition between centrosymmetric and noncentrosymmetric phases is important to the response. Here, we focus on the epitaxial growth of PbZrO 3 thin films and understanding the chemistry-structure coupling in Pb 1+δ ZrO 3 (δ = 0, 0.1, 0.2). High-quality, single-phase Pb 1+δ ZrO 3 films are synthesized via pulsed-laser deposition. Although no significant lattice parameter change is observed in X-ray studies, electrical characterization reveals that while the PbZrO 3 and Pb 1.1 ZrO 3 heterostructures remain intrinsically antiferroelectric, the Pb 1.2 ZrO 3 heterostructures exhibit a hysteresis loop indicative of ferroelectric response. Further X-ray scattering studies reveal strong quarter-order diffraction peaks in PbZrO 3 and Pb 1.1 ZrO 3 heterostructures indicative of antiferroelectricity, while no such peaks are observed for Pb 1.2 ZrO 3 heterostructures. Density functional theory calculations suggest the large cation nonstoichiometry is accommodated by incorporation of antisite Pb Zr defects, which drive the Pb 1.2 ZrO 3 heterostructures to a ferroelectric phase with R3c symmetry. In the end, stabilization of metastable phases in materials via chemical nonstoichiometry and defect engineering enables a novel route to manipulate the energy of the ground state of materials and the corresponding material properties.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Army Research Office (ARO)
Grant/Contract Number:
AC02-06CH11357; AC02-05CH11231
OSTI ID:
1394834
Alternate ID(s):
OSTI ID: 1436637
Journal Information:
Chemistry of Materials, Vol. 29, Issue 15; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (1)

Nonstoichiometry, structure, and properties of Ba 1−x TiO y thin films journal January 2018