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Title: Effect of Sr doping on the magnetic exchange interactions in manganites of type L a 1 - x S r x M n y A 1 - y O 3 ( A = Ga , Ti ; 0.1 y 1 )

Abstract

Strontium doping transforms manganites of type La 1 - x Sr x Mn O 3 from an insulating antiferromagnet ( x = 0 ) to a metallic ferromagnet ( x > 0.16 ) due to the induced charge carriers (holes). We employed neutron scattering experiments in order to investigate the effect of Sr doping on a tailor-made compound of composition La 0.7 S r 0.3 M n 0.1 Ti 0.3 G a 0.6 O 3 . By the simultaneous doping with S r 2 + and Ti 4 + ions, the compound remains in the insulating state so that the magnetic interactions for large Sr doping can be studied in the absence of charge carriers. At T C = 215 K , there is a first-order reconstructive phase transition from the trigonal R - 3 c structure to the orthorhombic Pnma structure via an intermediate virtual configuration described by the common monoclinic subgroup P2 1 / c . The magnetic excitations associated with Mn 3 + dimers give evidence for two different nearest-neighbor ferromagnetic exchange interactions, in contrast to the undoped compound LaM n y A 1 - y O 3 where both ferromagnetic and antiferromagnetic interactions are present.more » Furthemore, the doping-induced changes of the exchange coupling originates from different Mn-O-Mn bond angles determined by neutron diffraction. The large fourth-nearest-neighbor interaction found for metallic manganites is absent in the insulating state. Here, we argue that the Ruderman-Kittel-Kasuya-Yosida interaction reasonably accounts for all the exchange couplings derived from the spin-wave dispersion in metallic manganites.« less

Authors:
 [1];  [2];  [3];  [4]
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab of Neutron Scattering and Imaging; SwissNeutronics AG, Klingnau (Switzerland)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  3. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab. for Scientific Developments and Novel Materials
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab of Neutron Scattering and Imaging
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1360072
Alternate Identifier(s):
OSTI ID: 1347051
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 10; 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

Furrer, Albert, Podlesnyak, Andrey A., Pomjakushina, Ekaterina, and Pomjakushin, Vladimir. Effect of Sr doping on the magnetic exchange interactions in manganites of type La1-xSrxMnyA1-yO3(A=Ga,Ti;0.1≤y≤1). United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.104414.
Furrer, Albert, Podlesnyak, Andrey A., Pomjakushina, Ekaterina, & Pomjakushin, Vladimir. Effect of Sr doping on the magnetic exchange interactions in manganites of type La1-xSrxMnyA1-yO3(A=Ga,Ti;0.1≤y≤1). United States. doi:10.1103/PhysRevB.95.104414.
Furrer, Albert, Podlesnyak, Andrey A., Pomjakushina, Ekaterina, and Pomjakushin, Vladimir. Tue . "Effect of Sr doping on the magnetic exchange interactions in manganites of type La1-xSrxMnyA1-yO3(A=Ga,Ti;0.1≤y≤1)". United States. doi:10.1103/PhysRevB.95.104414. https://www.osti.gov/servlets/purl/1360072.
@article{osti_1360072,
title = {Effect of Sr doping on the magnetic exchange interactions in manganites of type La1-xSrxMnyA1-yO3(A=Ga,Ti;0.1≤y≤1)},
author = {Furrer, Albert and Podlesnyak, Andrey A. and Pomjakushina, Ekaterina and Pomjakushin, Vladimir},
abstractNote = {Strontium doping transforms manganites of type La 1 - x Sr x Mn O 3 from an insulating antiferromagnet ( x = 0 ) to a metallic ferromagnet ( x > 0.16 ) due to the induced charge carriers (holes). We employed neutron scattering experiments in order to investigate the effect of Sr doping on a tailor-made compound of composition La 0.7 S r 0.3 M n 0.1 Ti 0.3 G a 0.6 O 3 . By the simultaneous doping with S r 2 + and Ti 4 + ions, the compound remains in the insulating state so that the magnetic interactions for large Sr doping can be studied in the absence of charge carriers. At T C = 215 K , there is a first-order reconstructive phase transition from the trigonal R - 3 c structure to the orthorhombic Pnma structure via an intermediate virtual configuration described by the common monoclinic subgroup P2 1 / c . The magnetic excitations associated with Mn 3 + dimers give evidence for two different nearest-neighbor ferromagnetic exchange interactions, in contrast to the undoped compound LaM n y A 1 - y O 3 where both ferromagnetic and antiferromagnetic interactions are present. Furthemore, the doping-induced changes of the exchange coupling originates from different Mn-O-Mn bond angles determined by neutron diffraction. The large fourth-nearest-neighbor interaction found for metallic manganites is absent in the insulating state. Here, we argue that the Ruderman-Kittel-Kasuya-Yosida interaction reasonably accounts for all the exchange couplings derived from the spin-wave dispersion in metallic manganites.},
doi = {10.1103/PhysRevB.95.104414},
journal = {Physical Review B},
number = 10,
volume = 95,
place = {United States},
year = {2017},
month = {3}
}

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Works referenced in this record:

Colossal magnetoresistant materials: the key role of phase separation
journal, April 2001


Neutron diffraction study and magnetic properties of LaMn 1 x Ga x O 3
journal, November 2002


Magnetic control of ferroelectric polarization
journal, November 2003


Two-Dimensional Planar Ferromagnetic Coupling in LaMnO 3
journal, December 1996

  • Hirota, Kazuma; Kaneko, Nobuhisa; Nishizawa, Akinori
  • Journal of the Physical Society of Japan, Vol. 65, Issue 12
  • DOI: 10.1143/JPSJ.65.3736

Spin waves in the antiferromagnet perovskite LaMn O 3 : A neutron-scattering study
journal, December 1996


Fermi surface of the colossal magnetoresistance perovskite La 0.7 Sr 0.3 MnO 3
journal, January 1999


Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976


Spin waves in the ferromagnetic metallic manganites La 1 x ( Ca 1 y Sr y ) x Mn O 3
journal, August 2007


Tolerance factor rules for Sr1−x−yCaxBayMnO3 perovskites
journal, January 2003


Angular and Distance Dependence of the Magnetic Properties of Oxo-Bridged Iron(III) Dimers
journal, July 1997

  • Weihe, Högni; Güdel, Hans U.
  • Journal of the American Chemical Society, Vol. 119, Issue 28
  • DOI: 10.1021/ja970320r

Spin dependent distribution and Fermi surface of the perovskite manganite compound La0.7Sr0.3MnO3 via 2D-ACAR measurements
journal, February 2004


Effect of oxygen isotope substitution and crystal microstructure on magnetic ordering and phase separation in ( La 1 y Pr y ) 0.7 Ca 0.3 Mn O 3
journal, February 2007


High-resolution powder diffractometer HRPT for thermal neutrons at SINQ
journal, March 2000


Recent advances in magnetic structure determination by neutron powder diffraction
journal, October 1993


Procedure for obtaining microscopic mechanisms of reconstructive phase transitions in crystalline solids
journal, April 2002


Evolution of Spin-Wave Excitations in Ferromagnetic Metallic Manganites
journal, January 2006


Magnon damping by magnon-phonon coupling in manganese perovskites
journal, April 2000


Extraction of exchange parameters in transition-metal perovskites
journal, September 2015


Ferromagnetic and antiferromagnetic dimer splittings in LaMn 0 . 1 Ga 0 . 9 O 3
journal, May 2011


Ferromagnetic compounds of manganese with perovskite structure
journal, March 1950


Neutron-diffraction study of the Jahn-Teller transition in stoichiometric LaMnO 3
journal, February 1998


Softening and Broadening of the Zone Boundary Magnons in Pr 0.63 Sr 0.37 MnO 3
journal, February 1998


Magnetic cluster excitations
journal, March 2013


ISODISPLACE : a web-based tool for exploring structural distortions
journal, July 2006

  • Campbell, Branton J.; Stokes, Harold T.; Tanner, David E.
  • Journal of Applied Crystallography, Vol. 39, Issue 4
  • DOI: 10.1107/S0021889806014075

Crystal Distortion in Magnetic Compounds
journal, May 1960

  • Kanamori, Junjiro
  • Journal of Applied Physics, Vol. 31, Issue 5
  • DOI: 10.1063/1.1984590

The new cold neutron chopper spectrometer at the Spallation Neutron Source: Design and performance
journal, August 2011

  • Ehlers, G.; Podlesnyak, A. A.; Niedziela, J. L.
  • Review of Scientific Instruments, Vol. 82, Issue 8
  • DOI: 10.1063/1.3626935

Orbital Nature of Ferromagnetic Magnons in Manganites
journal, January 2005