skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo 2 Fe 11 AlO 22

Abstract

Here, we have investigated magnetic orders and excitations in a Y-type hexaferrite BaSrCo2Fe11AlO22 (BSCoFAO), which was reported to exhibit spin-driven ferroelectricity at room temperature. By means of magnetization, electric polarization, and neutron-diffraction measurements using single-crystal samples, we establish a H-T magnetic phase diagram for magnetic field perpendicular to the c axis (H⟂c). This system exhibits an alternating longitudinal conical (ALC) magnetic structure in the ground state, and it turns into a non-co-planar commensurate magnetic order with spin-driven ferroelectricity under H⟂c. The field-induced ferroelectric phase remains as a metastable state after removing magnetic field below 250 K. This metastability is the key to understanding of magnetic field reversal of the spin-driven electric polarization in this system. Inelastic polarized neutron-scattering measurements in the ALC phase reveal a magnetic excitation at around 7.5 meV, which is attributed to spin components oscillating in a plane perpendicular to the cone axis. This phasonlike excitation is expected to be an electric-field active magnon, i.e., electromagnon excitation, in terms of the magnetostriction mechanism.

Authors:
 [1];  [2];  [3];  [3];  [4];  [5];  [1];  [1];  [2]
  1. RIKEN Center for Emergent Matter Science, Saitama (Japan)
  2. RIKEN Center for Emergent Matter Science, Saitama (Japan); Univ. of Tokyo, Kashiwa (Japan)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Univ. of Tennessee, Knoxville, TN (United States)
  5. RIKEN Center for Emergent Matter Science, Saitama (Japan); Japan Atomic Energy Agency, Ibaraki (Japan); Comprehensive Research Organization for Science and Society, Ibaraki (Japan)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1337864
Alternate Identifier(s):
OSTI ID: 1333977
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 19; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Nakajima, Taro, Tokunaga, Yusuke, Matsuda, Masaaki, Dissanayake, Sachith E., Fernandez-Baca, Jaime A., Kakurai, Kazuhisa, Taguchi, Yasujiro, Tokura, Yoshinori, and Arima, Taka-hisa. Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.94.195154.
Nakajima, Taro, Tokunaga, Yusuke, Matsuda, Masaaki, Dissanayake, Sachith E., Fernandez-Baca, Jaime A., Kakurai, Kazuhisa, Taguchi, Yasujiro, Tokura, Yoshinori, & Arima, Taka-hisa. Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22. United States. https://doi.org/10.1103/PhysRevB.94.195154
Nakajima, Taro, Tokunaga, Yusuke, Matsuda, Masaaki, Dissanayake, Sachith E., Fernandez-Baca, Jaime A., Kakurai, Kazuhisa, Taguchi, Yasujiro, Tokura, Yoshinori, and Arima, Taka-hisa. 2016. "Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22". United States. https://doi.org/10.1103/PhysRevB.94.195154. https://www.osti.gov/servlets/purl/1337864.
@article{osti_1337864,
title = {Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22},
author = {Nakajima, Taro and Tokunaga, Yusuke and Matsuda, Masaaki and Dissanayake, Sachith E. and Fernandez-Baca, Jaime A. and Kakurai, Kazuhisa and Taguchi, Yasujiro and Tokura, Yoshinori and Arima, Taka-hisa},
abstractNote = {Here, we have investigated magnetic orders and excitations in a Y-type hexaferrite BaSrCo2Fe11AlO22 (BSCoFAO), which was reported to exhibit spin-driven ferroelectricity at room temperature. By means of magnetization, electric polarization, and neutron-diffraction measurements using single-crystal samples, we establish a H-T magnetic phase diagram for magnetic field perpendicular to the c axis (H⟂c). This system exhibits an alternating longitudinal conical (ALC) magnetic structure in the ground state, and it turns into a non-co-planar commensurate magnetic order with spin-driven ferroelectricity under H⟂c. The field-induced ferroelectric phase remains as a metastable state after removing magnetic field below 250 K. This metastability is the key to understanding of magnetic field reversal of the spin-driven electric polarization in this system. Inelastic polarized neutron-scattering measurements in the ALC phase reveal a magnetic excitation at around 7.5 meV, which is attributed to spin components oscillating in a plane perpendicular to the cone axis. This phasonlike excitation is expected to be an electric-field active magnon, i.e., electromagnon excitation, in terms of the magnetostriction mechanism.},
doi = {10.1103/PhysRevB.94.195154},
url = {https://www.osti.gov/biblio/1337864}, journal = {Physical Review B},
issn = {2469-9950},
number = 19,
volume = 94,
place = {United States},
year = {Wed Nov 30 00:00:00 EST 2016},
month = {Wed Nov 30 00:00:00 EST 2016}
}

Journal Article:

Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Cation Distribution and Helimagnetic Structure of the Ba 2 (Zn 1- x Mg x ) 2 Fe 12 O 22 System as Revealed by Magnetization Measurements and Neutron Diffraction
journal, September 2001


Magnetic field controllable electric polarization in Y-type hexaferrite Ba 0.5 Sr 1.5 Co 2 Fe 12 O 22
journal, September 2015


Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
journal, March 2006


Magnetic control of ferroelectric polarization
journal, November 2003


Realization of Giant Magnetoelectricity in Helimagnets
journal, January 2010


Gigantic terahertz magnetochromism via electromagnons in the hexaferrite magnet Ba 2 Mg 2 Fe 12 O 22
journal, February 2011


Ferroelectricity in Spiral Magnets
journal, February 2006


Two distinct ferroelectric phases in the multiferroic Y -type hexaferrite Ba 2 Mg 2 Fe 12 O 22
journal, November 2009


Low-field magnetoelectric effect at room temperature
journal, August 2010


Neutron diffraction studies on the multiferroic conical magnet Ba 2 Mg 2 Fe 12 O 22
journal, May 2010


Magnetic Inversion Symmetry Breaking and Ferroelectricity in TbMnO 3
journal, August 2005


VESTA : a three-dimensional visualization system for electronic and structural analysis
journal, May 2008


Heliconical magnetic order and field-induced multiferroicity of the Co 2 Y-type hexaferrite Ba 0.3 Sr 1.7 Co 2 Fe 12 O 22
journal, September 2012


Electric-dipole-active magnetic resonance in the conical-spin magnet Ba 2 Mg 2 Fe 12 O 22
journal, December 2009


Effect of High-Pressure Oxygen Annealing on Electrical and Magnetoelectric Properties of BaSrCo 2 Fe 11 AlO 22 Ceramics
journal, April 2015


Electric Polarization Rotation in a Hexaferrite with Long-Wavelength Magnetic Structures
journal, April 2005


Magnetoelectric Hexaferrites
journal, March 2012


Field-Induced Commensurate Intermediate Phases in Helimagnet (Ba 1- x Sr x ) 2 Zn 2 Fe 12 O 22 ( x =0.748 )
journal, April 1993


Low-Magnetic-Field Control of Electric Polarization Vector in a Helimagnet
journal, March 2008


Electrical control of large magnetization reversal in a helimagnet
journal, June 2014


Ferroelectric Polarization Reversal by a Magnetic Field in Multiferroic Y-type Hexaferrite Ba 2 Mg 2 Fe 12 O 22
journal, February 2008


Magnetic Structure Change in Ba 2 Mg 2 Fe 12 O 22
journal, April 1986


Spin Current and Magnetoelectric Effect in Noncollinear Magnets
journal, July 2005


Laser-diode-heated floating zone (LDFZ) method appropriate to crystal growth of incongruently melting materials
journal, January 2013


Realization of giant magnetoelectricity in helimagnets
text, January 2010


Electrical control of large magnetization reversal in a helimagnet
text, January 2014


Spin current and magneto-electric effect in non-collinear magnets
text, January 2004


Works referencing / citing this record:

Spherical neutron polarimetry under high pressure for a multiferroic delafossite ferrite
journal, October 2018


Magnetization-polarization cross-control near room temperature in hexaferrite single crystals
journal, March 2019


Reversal and non-reversal ferroelectric polarizations in a Y-type hexaferrite
journal, January 2019


A suite-level review of the neutron single-crystal diffraction instruments at Oak Ridge National Laboratory
journal, September 2018


WAND 2 —A versatile wide angle neutron powder/single crystal diffractometer
journal, September 2018


Vibrational spectra of multiferroics with Y- and Z-type hexaferrite structures
journal, August 2018


Room-temperature electric field modulation of magnetization in a helimagnet
journal, October 2019


Electromagnon Resonance at Room Temperature with Gigantic Magnetochromism
journal, April 2018


Hidden spin-order-induced room-temperature ferroelectricity in a peculiar conical magnetic structure
journal, March 2017


Electromagnon in the Y-type hexaferrite BaSrCoZnFe 11 AlO 22
journal, April 2018


Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering
journal, July 2019