Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3

S. Hameed; Sami El-Khatib; K. P. Olson; Biqiong Yu; T. J. Williams; T. Hong; Q. Sheng; K. Yamakawa; J. Zang; Y. J. Uemura; G. Q. Zhao; C. Q. Jin; L. Fu; Y. Gu; F. Ning; Y. Cai; K. M. Kojima; J. W. Freeland; M. Matsuda; C. Leighton; M. Greven

doi:10.1103/PhysRevB.104.024410

Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3

S. Hameed, Sami El-Khatib, K. P. Olson, Biqiong Yu, T. J. Williams, T. Hong, Q. Sheng, K. Yamakawa, J. Zang, Y. J. Uemura, G. Q. Zhao, C. Q. Jin, L. Fu, Y. Gu, F. Ning, Y. Cai, K. M. Kojima, J. W. Freeland, M. Matsuda, C. LeightonM. Greven

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We explore the magnetically ordered ground state of the isovalently substituted Mott insulator Y1-xLaxTiO3 for x≤ 0.3 via single-crystal growth, magnetometry, neutron diffraction, x-ray magnetic circular dichroism, muon spin rotation, and small-angle neutron scattering (SANS). We find that the decrease in the magnetic transition temperature on approaching the ferromagnetic-antiferromagnetic phase boundary at the La concentration xc≈0.3 is accompanied by a strong suppression of both bulk and local ordered magnetic moments, along with a volumewise separation into magnetically ordered and paramagnetic regions. The thermal phase transition does not show conventional second-order behavior since neither a clear signature of dynamic critical behavior nor a power-law divergence of the magnetic correlation length is found for the studied substitution range; this finding becomes increasingly obvious with increasing La substitution. We find no evidence for a spin-glass phase. Finally, from SANS and magnetometry measurements, we discern a crossover from easy-axis to easy-plane magnetocrystalline anisotropy with increasing La substitution. These results indicate complex changes in magnetic structure upon approaching the phase boundary.

Original language	English (US)
Article number	024410
Journal	Physical Review B
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.104.024410
State	Published - Jul 9 2021

Bibliographical note

Funding Information:
We thank D. Pelc for help with AC susceptibility measurements. The work at University of Minnesota was funded by the Department of Energy through the University of Minnesota Center for Quantum Materials, under Grant No. DE-SC0016371. Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. Electron microprobe analyses of the crystal chemical composition were carried out at the Electron Microprobe Laboratory, Department of Earth Sciences, University of Minnesota-Twin Cities. A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. S. El-Khatib acknowledges travel support from AUS (Grant No. FRG17-T-06). Work at Columbia University was supported by U.S. NSF DMR-1610633, the Reimei Project from the Japan Atomic Energy Agency, and Friends of U Tokyo, Inc.

Publisher Copyright:
© 2021 American Physical Society.

MRSEC Support

Shared

Publisher link

10.1103/PhysRevB.104.024410

Find It

Find It at U of M Libraries

Cite this

Hameed, S., El-Khatib, S., Olson, K. P., Yu, B., Williams, T. J., Hong, T., Sheng, Q., Yamakawa, K., Zang, J., Uemura, Y. J., Zhao, G. Q., Jin, C. Q., Fu, L., Gu, Y., Ning, F., Cai, Y., Kojima, K. M., Freeland, J. W., Matsuda, M., ... Greven, M. (2021). Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3. Physical Review B, 104(2), Article 024410. https://doi.org/10.1103/PhysRevB.104.024410

Hameed, S, El-Khatib, S, Olson, KP, Yu, B, Williams, TJ, Hong, T, Sheng, Q, Yamakawa, K, Zang, J, Uemura, YJ, Zhao, GQ, Jin, CQ, Fu, L, Gu, Y, Ning, F, Cai, Y, Kojima, KM, Freeland, JW, Matsuda, M, Leighton, C & Greven, M 2021, 'Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3', Physical Review B, vol. 104, no. 2, 024410. https://doi.org/10.1103/PhysRevB.104.024410

@article{e17de0b50c1b4d84879990261fdb4bd8,

title = "Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3",

abstract = "We explore the magnetically ordered ground state of the isovalently substituted Mott insulator Y1-xLaxTiO3 for x≤ 0.3 via single-crystal growth, magnetometry, neutron diffraction, x-ray magnetic circular dichroism, muon spin rotation, and small-angle neutron scattering (SANS). We find that the decrease in the magnetic transition temperature on approaching the ferromagnetic-antiferromagnetic phase boundary at the La concentration xc≈0.3 is accompanied by a strong suppression of both bulk and local ordered magnetic moments, along with a volumewise separation into magnetically ordered and paramagnetic regions. The thermal phase transition does not show conventional second-order behavior since neither a clear signature of dynamic critical behavior nor a power-law divergence of the magnetic correlation length is found for the studied substitution range; this finding becomes increasingly obvious with increasing La substitution. We find no evidence for a spin-glass phase. Finally, from SANS and magnetometry measurements, we discern a crossover from easy-axis to easy-plane magnetocrystalline anisotropy with increasing La substitution. These results indicate complex changes in magnetic structure upon approaching the phase boundary.",

author = "S. Hameed and Sami El-Khatib and Olson, {K. P.} and Biqiong Yu and Williams, {T. J.} and T. Hong and Q. Sheng and K. Yamakawa and J. Zang and Uemura, {Y. J.} and Zhao, {G. Q.} and Jin, {C. Q.} and L. Fu and Y. Gu and F. Ning and Y. Cai and Kojima, {K. M.} and Freeland, {J. W.} and M. Matsuda and C. Leighton and M. Greven",

note = "Funding Information: We thank D. Pelc for help with AC susceptibility measurements. The work at University of Minnesota was funded by the Department of Energy through the University of Minnesota Center for Quantum Materials, under Grant No. DE-SC0016371. Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. Electron microprobe analyses of the crystal chemical composition were carried out at the Electron Microprobe Laboratory, Department of Earth Sciences, University of Minnesota-Twin Cities. A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. S. El-Khatib acknowledges travel support from AUS (Grant No. FRG17-T-06). Work at Columbia University was supported by U.S. NSF DMR-1610633, the Reimei Project from the Japan Atomic Energy Agency, and Friends of U Tokyo, Inc. Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = jul,

day = "9",

doi = "10.1103/PhysRevB.104.024410",

language = "English (US)",

volume = "104",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3

AU - Hameed, S.

AU - El-Khatib, Sami

AU - Olson, K. P.

AU - Yu, Biqiong

AU - Williams, T. J.

AU - Hong, T.

AU - Sheng, Q.

AU - Yamakawa, K.

AU - Zang, J.

AU - Uemura, Y. J.

AU - Zhao, G. Q.

AU - Jin, C. Q.

AU - Fu, L.

AU - Gu, Y.

AU - Ning, F.

AU - Cai, Y.

AU - Kojima, K. M.

AU - Freeland, J. W.

AU - Matsuda, M.

AU - Leighton, C.

AU - Greven, M.

N1 - Funding Information: We thank D. Pelc for help with AC susceptibility measurements. The work at University of Minnesota was funded by the Department of Energy through the University of Minnesota Center for Quantum Materials, under Grant No. DE-SC0016371. Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. Electron microprobe analyses of the crystal chemical composition were carried out at the Electron Microprobe Laboratory, Department of Earth Sciences, University of Minnesota-Twin Cities. A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. S. El-Khatib acknowledges travel support from AUS (Grant No. FRG17-T-06). Work at Columbia University was supported by U.S. NSF DMR-1610633, the Reimei Project from the Japan Atomic Energy Agency, and Friends of U Tokyo, Inc. Publisher Copyright: © 2021 American Physical Society.

PY - 2021/7/9

Y1 - 2021/7/9

N2 - We explore the magnetically ordered ground state of the isovalently substituted Mott insulator Y1-xLaxTiO3 for x≤ 0.3 via single-crystal growth, magnetometry, neutron diffraction, x-ray magnetic circular dichroism, muon spin rotation, and small-angle neutron scattering (SANS). We find that the decrease in the magnetic transition temperature on approaching the ferromagnetic-antiferromagnetic phase boundary at the La concentration xc≈0.3 is accompanied by a strong suppression of both bulk and local ordered magnetic moments, along with a volumewise separation into magnetically ordered and paramagnetic regions. The thermal phase transition does not show conventional second-order behavior since neither a clear signature of dynamic critical behavior nor a power-law divergence of the magnetic correlation length is found for the studied substitution range; this finding becomes increasingly obvious with increasing La substitution. We find no evidence for a spin-glass phase. Finally, from SANS and magnetometry measurements, we discern a crossover from easy-axis to easy-plane magnetocrystalline anisotropy with increasing La substitution. These results indicate complex changes in magnetic structure upon approaching the phase boundary.

AB - We explore the magnetically ordered ground state of the isovalently substituted Mott insulator Y1-xLaxTiO3 for x≤ 0.3 via single-crystal growth, magnetometry, neutron diffraction, x-ray magnetic circular dichroism, muon spin rotation, and small-angle neutron scattering (SANS). We find that the decrease in the magnetic transition temperature on approaching the ferromagnetic-antiferromagnetic phase boundary at the La concentration xc≈0.3 is accompanied by a strong suppression of both bulk and local ordered magnetic moments, along with a volumewise separation into magnetically ordered and paramagnetic regions. The thermal phase transition does not show conventional second-order behavior since neither a clear signature of dynamic critical behavior nor a power-law divergence of the magnetic correlation length is found for the studied substitution range; this finding becomes increasingly obvious with increasing La substitution. We find no evidence for a spin-glass phase. Finally, from SANS and magnetometry measurements, we discern a crossover from easy-axis to easy-plane magnetocrystalline anisotropy with increasing La substitution. These results indicate complex changes in magnetic structure upon approaching the phase boundary.

UR - http://www.scopus.com/inward/record.url?scp=85109799998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85109799998&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.104.024410

DO - 10.1103/PhysRevB.104.024410

M3 - Article

AN - SCOPUS:85109799998

SN - 2469-9950

VL - 104

JO - Physical Review B

JF - Physical Review B

IS - 2

M1 - 024410

ER -

Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3

Abstract

Bibliographical note

MRSEC Support

Publisher link

Find It

Other files and links

Fingerprint

MRSEC Program (Period of DMR-2011401)

IRG-1: Ionic Control of Materials

Cite this

Nature of the ferromagnetic-antiferromagnetic transition in Y1-xLaxTi O3

Abstract

Bibliographical note

MRSEC Support

Publisher link

Find It

Other files and links

Fingerprint

Projects

MRSEC Program (Period of DMR-2011401)

IRG-1: Ionic Control of Materials

Cite this