Revisiting the ground state of CoAl2O4 : Comparison to the conventional antiferromagnet MnAl2O4

MacDougall, Gregory J.; Aczel, Adam A.; Su, Yixi; Schweika, Werner; Faulhaber, E.; Schneidewind, A.; Christianson, Andrew D.; Zarestky, Jerel L.; Zhou, H. D.; Mandrus, David; Nagler, Stephen E.

doi:10.1103/PhysRevB.94.184422

Title: Revisiting the ground state of ${CoAl}_{2} O_{4}$ : Comparison to the conventional antiferromagnet ${MnAl}_{2} O_{4}$

Abstract

The A-site spinel material CoAl₂O₄ is a physical realization of the frustrated diamond-lattice antiferromagnet, a model in which unique incommensurate or “spin-spiral-liquid” ground states are predicted. Our previous single-crystal neutron scattering study instead classified it as a “kinetically inhibited” antiferromagnet, where the long-ranged correlations of a collinear Néel ground state are blocked by the freezing of domain-wall motion below a first-order phase transition at T*=6.5 K. This study provides new data sets from a number of experiments, which support and expand this work in several important ways. We show that the phenomenology leading to the kinetically inhibited order is unaffected by sample measured and instrument resolution, while new low-temperature measurements reveal spin correlations are unchanging between T=2 K and 250 mK, consistent with a frozen state. Polarized diffuse neutron measurements show several interesting magnetic features, which can be entirely explained by the existence of short-ranged Néel order. Finally, and crucially, this paper presents some neutron scattering studies of single crystalline MnAl₂O₄, which acts as an unfrustrated analog to CoAl₂O₄ and shows all the hallmarks of a classical antiferromagnet with a continuous phase transition to Néel order at T_N=39 K. Direct comparison between the two compounds indicates that CoAl₂O₄ is unique,more »« less

Authors:

MacDougall, Gregory J. ^[1]; Aczel, Adam A. ^[2]; Su, Yixi ^[3]; Schweika, Werner ^[4]; Faulhaber, E. ^[5]; Schneidewind, A. ^[6]; Christianson, Andrew D. ^[2]; Zarestky, Jerel L. ^[7]; Zhou, H. D. ^[8]; Mandrus, David ^[9]; Nagler, Stephen E. ^[10]

Univ. of Illinois, Urbana, IL (United States). Dept. of Physics; Seitz Materials Research Lab.; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Forschungszentrum Julich GmbH, Garching (Germany). Julich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ)
Forschungszentrum Julich GmbH (Germany). Julich Centre for Neutron Science (JCNS)
Forschungszentrum Julich GmbH, Garching (Germany). Julich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ); Helmholtz-Zentrum Berlin for Materials and Energy, Berlin (Germany)
Helmholtz-Zentrum Berlin for Materials and Energy, Berlin (Germany); Forschungsneutronenquell Heinz Meier-Leibnitz (FRM-II), Garching (Germany)
Ames Lab. and Iowa State Univ., Ames, IA (United States). Division of Materials Science and Engineering
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; National High Magnetic Field Lab., Tallahassee, FL (United States)
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division; Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center

Publication Date:: Thu Nov 17 00:00:00 EST 2016

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

OSTI Identifier:: 1335348

Alternate Identifier(s):: OSTI ID: 1332590

Grant/Contract Number:: AC05-00OR22725; DMR-1455264-CAR; NSF-DMR-1157490

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 94; Journal Issue: 18; 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; inelastic neutron scattering; spinel; antiferromagnet

Citation Formats


                    MacDougall, Gregory J., Aczel, Adam A., Su, Yixi, Schweika, Werner, Faulhaber, E., Schneidewind, A., Christianson, Andrew D., Zarestky, Jerel L., Zhou, H. D., Mandrus, David, and Nagler, Stephen E. Revisiting the ground state of CoAl2O4 : Comparison to the conventional antiferromagnet MnAl2O4.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevB.94.184422.

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                    MacDougall, Gregory J., Aczel, Adam A., Su, Yixi, Schweika, Werner, Faulhaber, E., Schneidewind, A., Christianson, Andrew D., Zarestky, Jerel L., Zhou, H. D., Mandrus, David, & Nagler, Stephen E. Revisiting the ground state of CoAl2O4 : Comparison to the conventional antiferromagnet MnAl2O4.  United States.  https://doi.org/10.1103/PhysRevB.94.184422

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                    MacDougall, Gregory J., Aczel, Adam A., Su, Yixi, Schweika, Werner, Faulhaber, E., Schneidewind, A., Christianson, Andrew D., Zarestky, Jerel L., Zhou, H. D., Mandrus, David, and Nagler, Stephen E. Thu .  
"Revisiting the ground state of CoAl2O4 : Comparison to the conventional antiferromagnet MnAl2O4".  United States.  https://doi.org/10.1103/PhysRevB.94.184422.  https://www.osti.gov/servlets/purl/1335348.

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@article{osti_1335348,

  title        = {Revisiting the ground state of CoAl2O4 : Comparison to the conventional antiferromagnet MnAl2O4},

  author       = {MacDougall, Gregory J. and Aczel, Adam A. and Su, Yixi and Schweika, Werner and Faulhaber, E. and Schneidewind, A. and Christianson, Andrew D. and Zarestky, Jerel L. and Zhou, H. D. and Mandrus, David and Nagler, Stephen E.},

  abstractNote = {The A-site spinel material CoAl2O4 is a physical realization of the frustrated diamond-lattice antiferromagnet, a model in which unique incommensurate or “spin-spiral-liquid” ground states are predicted. Our previous single-crystal neutron scattering study instead classified it as a “kinetically inhibited” antiferromagnet, where the long-ranged correlations of a collinear Néel ground state are blocked by the freezing of domain-wall motion below a first-order phase transition at T*=6.5 K. This study provides new data sets from a number of experiments, which support and expand this work in several important ways. We show that the phenomenology leading to the kinetically inhibited order is unaffected by sample measured and instrument resolution, while new low-temperature measurements reveal spin correlations are unchanging between T=2 K and 250 mK, consistent with a frozen state. Polarized diffuse neutron measurements show several interesting magnetic features, which can be entirely explained by the existence of short-ranged Néel order. Finally, and crucially, this paper presents some neutron scattering studies of single crystalline MnAl2O4, which acts as an unfrustrated analog to CoAl2O4 and shows all the hallmarks of a classical antiferromagnet with a continuous phase transition to Néel order at TN=39 K. Direct comparison between the two compounds indicates that CoAl2O4 is unique, not in the nature of high-temperature diffuse correlations, but rather in the nature of the frozen state below T*. Finally, the higher level of cation inversion in the MnAl2O4 sample indicates that this behavior is primarily an effect of greater next-nearest-neighbor exchange.},

  doi          = {10.1103/PhysRevB.94.184422},

  journal      = {Physical Review B},

  number       = 18,

  volume       = 94,

  place        = {United States},

  year         = {Thu Nov 17 00:00:00 EST 2016},

  month        = {Thu Nov 17 00:00:00 EST 2016}

}

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Works referencing / citing this record:

Ferrimagnetism in manganese-rich gallium and aluminium spinels due to mixed valence Mn ²⁺ –Mn ³⁺ states
journal, January 2018

Bekheet, Maged F.; Schlicker, Lukas; Doran, Andrew
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Spectroscopic and magnetic investigations of a spin-frustrated Mn-doped CoAl ₂ O ₄ spinel
journal, January 2019

Pradhan, Suman Kalyan; Dalal, Biswajit; Sarkar, Ankita
Physical Chemistry Chemical Physics, Vol. 21, Issue 2
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Title: Revisiting the ground state of CoAl 2 O 4 : Comparison to the conventional antiferromagnet MnAl 2 O 4

Abstract

Citation Formats

Quantum Order by Disorder in Frustrated Diamond Lattice Antiferromagnets journal, July 2008

XYZ-polarisation analysis of diffuse magnetic neutron scattering from single crystals journal, February 2010

Unconventional magnetic order in the frustrated diamond-lattice antiferromagnet CoAl 2 O 4 studied by neutron diffraction and classical Monte Carlo simulation journal, October 2014

Experimental evidence of a collinear antiferromagnetic ordering in the frustrated CoAl 2 O 4 spinel journal, November 2013

DNS: Diffuse scattering neutron time-of-flight spectrometer journal, June 2015

Vibronic and Magnetic Excitations in the Spin-Orbital Liquid State of FeSc 2 S 4 journal, June 2005

Order-by-disorder and spiral spin-liquid in frustrated diamond-lattice antiferromagnets journal, May 2007

Spin Glass Order by Antisite Disorder in the Highly Frustrated Spinel Oxide CoAl 2 O 4 journal, February 2013

Magnetic ordering and spin excitations in the frustrated magnet Mn Sc 2 S 4 journal, January 2006

Approaching the true ground state of frustrated A -site spinels: A combined magnetization and polarized neutron scattering study journal, May 2014

Time-Resolved X-Ray Scattering Study of Ordering and Coarsening in Cu 3 Au journal, August 1988

Kinetically inhibited order in a diamond-lattice antiferromagnet journal, September 2011

Spin liquid in a single crystal of the frustrated diamond lattice antiferromagnet CoAl 2 O 4 journal, September 2011

Spin-Orbital Singlet and Quantum Critical Point on the Diamond Lattice: FeSc 2 S 4 journal, March 2009

Excitation spectrum and magnetic field effects in a quantum critical spin-orbital system: The case of FeSc 2 S 4 journal, December 2009

Multi-step magnetic ordering in frustrated thiospinel MnSc 2 S 4 journal, March 2007

Theory of the ordered phase in A -site antiferromagnetic spinels journal, October 2008

Spin and Orbital Frustration in MnSc 2 S 4 and FeSc 2 S 4 journal, March 2004

Melting of antiferromagnetic ordering in spinel oxide CoAl 2 O 4 journal, March 2007

Spiral spin-liquid and the emergence of a vortex-like state in MnSc2S4 journal, October 2016

Geometric frustration in the cubic spinels M Al 2 O 4 ( M = Co , Fe, and Mn) journal, November 2005

Spin excitations in frustrated A -site spinels investigated with inelastic neutron scattering journal, April 2009

Evolution of magnetic states in frustrated diamond lattice antiferromagnetic Co ( Al 1 − x Co x ) 2 O 4 spinels journal, February 2010

Magnetic properties of normal spinels with only a-a interactions journal, January 1964

Impurity effects in highly frustrated diamond-lattice antiferromagnets journal, August 2011

Spin liquid versus spin solid in A-site spinels journal, May 2006

Spin and orbital frustration in FeSc 2 S 4 probed by Sc 45 NMR journal, April 2006

PANDA: Cold three axes spectrometer journal, June 2015

Stripeless incommensurate magnetism in strongly correlated oxide La 1.5 Sr 0.5 CoO 4 journal, May 2007

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Title: Revisiting the ground state of ${CoAl}_{2} O_{4}$ : Comparison to the conventional antiferromagnet ${MnAl}_{2} O_{4}$

Quantum Order by Disorder in Frustrated Diamond Lattice Antiferromagnets
journal, July 2008

XYZ-polarisation analysis of diffuse magnetic neutron scattering from single crystals
journal, February 2010

Unconventional magnetic order in the frustrated diamond-lattice antiferromagnet ${CoAl}_{2} O_{4}$ studied by neutron diffraction and classical Monte Carlo simulation
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Experimental evidence of a collinear antiferromagnetic ordering in the frustrated CoAl $_{2}$ O $_{4}$ spinel
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Vibronic and Magnetic Excitations in the Spin-Orbital Liquid State of ${FeSc}_{2} S_{4}$
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Time-Resolved X-Ray Scattering Study of Ordering and Coarsening in ${Cu}_{3}$ Au
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Kinetically inhibited order in a diamond-lattice antiferromagnet
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Theory of the ordered phase in $A$ -site antiferromagnetic spinels
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Melting of antiferromagnetic ordering in spinel oxide CoAl ₂ O ₄
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Geometric frustration in the cubic spinels $M {Al}_{2} O_{4}$ ( $M = Co$ , Fe, and Mn)
journal, November 2005

Spin excitations in frustrated $A$ -site spinels investigated with inelastic neutron scattering
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Evolution of magnetic states in frustrated diamond lattice antiferromagnetic $Co {({Al}_{1 - x} {Co}_{x})}_{2} O_{4}$ spinels
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Magnetic properties of normal spinels with only a-a interactions
journal, January 1964

Impurity effects in highly frustrated diamond-lattice antiferromagnets
journal, August 2011

Spin liquid versus spin solid in A-site spinels
journal, May 2006

Spin and orbital frustration in ${FeSc}_{2} S_{4}$ probed by ${}^{45}{Sc}$ NMR
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Order as an effect of disorder
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Magnetic properties of Co2+ ions in tetrahedral interstices of an oxide lattice
journal, August 1960

Ferrimagnetism in manganese-rich gallium and aluminium spinels due to mixed valence Mn ²⁺ –Mn ³⁺ states
journal, January 2018

Spectroscopic and magnetic investigations of a spin-frustrated Mn-doped CoAl ₂ O ₄ spinel
journal, January 2019