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Title: Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca 3Ru 2O 7 with Fe substitution

Abstract

Bilayer ruthenate Ca 3(Ru 1-xFe x) 2O 7 (x = 0.05) exhibits an incommensurate magnetic soliton lattice driven by the Dzyaloshinskii–Moriya interaction. Here, in this work, we report complex field-induced magnetic phase transitions and memory effect in this system via single-crystal neutron diffraction and magnetotransport measurements. We observe first-order incommensurate-to-commensurate magnetic transitions upon applying the magnetic field both along and perpendicular to the propagation axis of the incommensurate spin structure. Furthermore, we find that the metastable states formed upon decreasing the magnetic field depend on the temperature and the applied field orientation. Lastly, we suggest that the observed field-induced metastability may be ascribable to the quenched kinetics at low temperature.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [1];  [4];  [1]
  1. Michigan State Univ., East Lansing, MI (United States). Department of Physics and Astronomy
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
  3. Nanjing Univ. (China). Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures, School of Physics
  4. Tulane Univ., New Orleans, LA (United States). Department of Physics and Engineering Physics
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1426554
Grant/Contract Number:  
AC05-00OR22725; SC0012432
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 30; Journal Issue: 7; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhu, M., Hong, Tao, Peng, J., Zou, T., Mao, Z. Q., and Ke, X. Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca3Ru2O7 with Fe substitution. United States: N. p., 2018. Web. doi:10.1088/1361-648X/aaa626.
Zhu, M., Hong, Tao, Peng, J., Zou, T., Mao, Z. Q., & Ke, X. Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca3Ru2O7 with Fe substitution. United States. doi:10.1088/1361-648X/aaa626.
Zhu, M., Hong, Tao, Peng, J., Zou, T., Mao, Z. Q., and Ke, X. Tue . "Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca3Ru2O7 with Fe substitution". United States. doi:10.1088/1361-648X/aaa626. https://www.osti.gov/servlets/purl/1426554.
@article{osti_1426554,
title = {Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca3Ru2O7 with Fe substitution},
author = {Zhu, M. and Hong, Tao and Peng, J. and Zou, T. and Mao, Z. Q. and Ke, X.},
abstractNote = {Bilayer ruthenate Ca3(Ru1-xFex)2O7 (x = 0.05) exhibits an incommensurate magnetic soliton lattice driven by the Dzyaloshinskii–Moriya interaction. Here, in this work, we report complex field-induced magnetic phase transitions and memory effect in this system via single-crystal neutron diffraction and magnetotransport measurements. We observe first-order incommensurate-to-commensurate magnetic transitions upon applying the magnetic field both along and perpendicular to the propagation axis of the incommensurate spin structure. Furthermore, we find that the metastable states formed upon decreasing the magnetic field depend on the temperature and the applied field orientation. Lastly, we suggest that the observed field-induced metastability may be ascribable to the quenched kinetics at low temperature.},
doi = {10.1088/1361-648X/aaa626},
journal = {Journal of Physics. Condensed Matter},
issn = {0953-8984},
number = 7,
volume = 30,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: Schematic diagrams of the magnetic structures in Ca3(Ru1-xFex)2O7 ($x$ = 0.05). (a) AFMa and AFM-b: collinear antiferromagnetic structures with the magnetic moments along the a and $b$ axis, respectively. (b) CAFM-b: canted antiferromagnetic structure consisting of an AFM-a component and a ferromagnetic one along the $b$ axis. CAFM-a:more » canted antiferromagnetic structure consisting of an AFM-b component and a ferromagnetic one along the a axis. (c) In-plane view of one of the bilayers of the incommensurate (ICM) magnetic soliton lattice. The dashed square in magenta represents one unit cell. The orange rectangle with rounded corners encloses the domain wall. The spin rotation of the magnetic domain wall is proposed to be 180°, owing to a magnetic anisotropy of order 2. The blue and orange arrows stand for the direction of the magnetic field B // a and B // b, respectively.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.