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Pinched hysteresis loop in defect-free ferroelectric materials

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4]
  1. Univ. of Arkansas, Fayetteville, AR (United States); DOE/OSTI
  2. Univ. of Arkansas, Fayetteville, AR (United States); Univ. Paris-Saclay, Chatenay-Malabry (France)
  3. Univ. Paris-Saclay, Chatenay-Malabry (France)
  4. Univ. of Arkansas, Fayetteville, AR (United States)

In addition to the single polarization-versus-electric field hysteresis loop that is characteristic of ferroelectrics and the double hysteresis loop that is known to occur in antiferroelectrics, a third kind of polarization-versus-electric field function has been reported in several systems. This third kind is commonly termed the “pinched” loop due to its unusual shape, and is typically believed to originate from the pinning of domain walls interacting with defects. In this work, using an atomistic effective Hamiltonian scheme, we demonstrate that such a belief has to be broadened since our simulations also yield pinched loops in defect-free ferroelectric materials, as a result of the occurrence of intermediate modulated phases exhibiting an inhomogeneous dipolar pattern leading to the coexistence of both ferroelectric and antiferroelectric orders.

Research Organization:
Univ. of Arkansas, Fayetteville, AR (United States)
Sponsoring Organization:
US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0002220
OSTI ID:
1532932
Alternate ID(s):
OSTI ID: 1329953
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 14 Vol. 94; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Electric-field-induced phase transition and pinched P–E hysteresis loops in Pb-free ferroelectrics with a tungsten bronze structure journal April 2018
Polarity of modulated Na 0.5 Bi 0.5 TiO 3 and its slow structural relaxation journal July 2018
Pinched P-E hysteresis loops in Ba 4 Sm 2 Fe 0.5 Ti 3 Nb 6.5 O 30 ceramic with tungsten bronze structure journal August 2019
Super-Lattice Structure and Phase Evolution of Pb(Lu0.5Nb0.5)O3-PbTiO3 Single Crystal with Low PbTiO3 journal January 2018

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