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Revisiting spin cycloids in multiferroic BiFeO3

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [3]
  1. Soochow Univ., Jiangsu (China); Univ. of Arkansas, Fayetteville, AR (United States); DOE/OSTI
  2. Johannes Gutenberg-Univ. Mainz (Germany)
  3. Univ. of Arkansas, Fayetteville, AR (United States)
  4. Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)

We revisit the inverse spin current model that has been previously used to explain the existence of magnetic cycloids in bulk multiferroic BiFeO3. Using a first-principles-based effective Hamiltonian method, and in combination with Monte Carlo simulations, we predict a magnetic phase diagram as a function of first- and second-nearest-neighbor interaction strength in the spin current model and show that, in contrast with previous understanding, both first and second nearest neighbors have to be taken into account to be in accordance with experimental findings, including the existence of type-1 and type-2 cycloids with, respectively, [1¯10] and [11¯2] propagation directions, and the cycloid-to-antiferromagnetic transition under magnetic field. Other previously unknown magnetic arrangements are found in this phase diagram. Here, the microscopic origins of all its magnetic phases are further explained in terms of the coexistence of single solutions of the spin current model having different weights (in magnitude and even sign).

Research Organization:
Univ. of Arkansas, Fayetteville, AR (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Air Force Office of Scientific Research
Grant/Contract Number:
SC0002220
OSTI ID:
1610673
Alternate ID(s):
OSTI ID: 1482757
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 18 Vol. 98; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Progress in BiFeO 3 -based heterostructures: materials, properties and applications journal January 2020
The structural origin of composition-driven magnetic transformation in BiFeO 3 -based multiferroics: a neutron diffraction study journal January 2019
A magnetic phase diagram for nanoscale epitaxial BiFeO 3 films journal December 2019
Magnetic interactions in BiFeO 3 : A first-principles study journal March 2019

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