Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale

Phatak, C.; Petford-Long, A. K.; Zheng, H.; Mitchell, J. F.; Rosenkranz, S.; Norman, M. R.

doi:10.1103/PhysRevB.92.224418

Title: Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale

Abstract

Understanding the underlying mechanism and phenomenology of colossal magnetoresistance in manganites has largely focused on atomic and nanoscale physics such as double exchange, phase separation, and charge order. Here in this article, we consider a more macroscopic view of manganite materials physics, reporting on the ferromagnetic domain behavior in a bilayer manganite sample with a nominal composition of La_2-2xSr_1+2xMn₂O₇ with x = 0:38, studied using in-situ Lorentz transmission electron microscopy. The role of magnetocrystalline anisotropy on the structure of domain walls was elucidated. On cooling, magnetic domain contrast was seen to appear first at the Curie temperature within the a - b plane. With further reduction in temperature, the change in area fraction of magnetic domains was used to estimate the critical exponent describing the ferromagntic phase transition. Lastly, the ferromagnetic phase transition was accompanied by a distinctive nanoscale granular contrast close to the Curie temperature, which we infer to be related to the presence of ferromagnetic nanoclusters in a paramagnetic matrix, which has not yet been reported in bilayer manganites.

Authors:

Phatak, C. ^[1]; Petford-Long, A. K. ^[2]; Zheng, H. ^[1]; Mitchell, J. F. ^[1]; Rosenkranz, S. ^[1]; Norman, M. R. ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering

Publication Date:: Mon Dec 14 00:00:00 EST 2015

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

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

OSTI Identifier:: 1339106

Alternate Identifier(s):: OSTI ID: 1229586

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 92; Journal Issue: 22; Journal ID: ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats


                    Phatak, C., Petford-Long, A. K., Zheng, H., Mitchell, J. F., Rosenkranz, S., and Norman, M. R. Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevB.92.224418.

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                    Phatak, C., Petford-Long, A. K., Zheng, H., Mitchell, J. F., Rosenkranz, S., & Norman, M. R. Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale.  United States.  https://doi.org/10.1103/PhysRevB.92.224418

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                    Phatak, C., Petford-Long, A. K., Zheng, H., Mitchell, J. F., Rosenkranz, S., and Norman, M. R. Mon .  
"Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale".  United States.  https://doi.org/10.1103/PhysRevB.92.224418.  https://www.osti.gov/servlets/purl/1339106.

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@article{osti_1339106,

  title        = {Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale},

  author       = {Phatak, C. and Petford-Long, A. K. and Zheng, H. and Mitchell, J. F. and Rosenkranz, S. and Norman, M. R.},

  abstractNote = {Understanding the underlying mechanism and phenomenology of colossal magnetoresistance in manganites has largely focused on atomic and nanoscale physics such as double exchange, phase separation, and charge order. Here in this article, we consider a more macroscopic view of manganite materials physics, reporting on the ferromagnetic domain behavior in a bilayer manganite sample with a nominal composition of La2-2xSr1+2xMn2O7 with x = 0:38, studied using in-situ Lorentz transmission electron microscopy. The role of magnetocrystalline anisotropy on the structure of domain walls was elucidated. On cooling, magnetic domain contrast was seen to appear first at the Curie temperature within the a - b plane. With further reduction in temperature, the change in area fraction of magnetic domains was used to estimate the critical exponent describing the ferromagntic phase transition. Lastly, the ferromagnetic phase transition was accompanied by a distinctive nanoscale granular contrast close to the Curie temperature, which we infer to be related to the presence of ferromagnetic nanoclusters in a paramagnetic matrix, which has not yet been reported in bilayer manganites.},

  doi          = {10.1103/PhysRevB.92.224418},

  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  number       = 22,

  volume       = 92,

  place        = {United States},

  year         = {Mon Dec 14 00:00:00 EST 2015},

  month        = {Mon Dec 14 00:00:00 EST 2015}

}

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Works referenced in this record:

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Works referencing / citing this record:

In Situ Transmission Electron Microscopy
book, January 2019

Ross, Frances M.; Minor, Andrew M.
Springer Handbook of Microscopy
DOI: 10.1007/978-3-030-00069-1_3

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Title: Ferromagnetic domain behavior and phase transition in bilayer manganites investigated at the nanoscale

Abstract

Citation Formats

Lattice effects and magnetic structure in the layered colossal magnetoresistance manganite La 2 − 2 x Sr 1 + 2 x Mn 2 O 7 , x = 0.3 journal, April 1999

Interplay of spin and orbital ordering in the layered colossal magnetoresistance manganite La 2 − 2 x Sr 1 + 2 x Mn 2 O 7 ( 0.5 <~ x <~ 1 . 0 ) journal, December 2000

Giant magnetoresistance of manganese oxides with a layered perovskite structure journal, March 1996

Spectacular Doping Dependence of Interlayer Exchange and Other Results on Spin Waves in Bilayer Manganites journal, October 2001

Fabrication and physical properties of c -axis oriented thin films of layered perovskite La2−2xSr1+2xMn2O7 journal, November 1998

Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites journal, June 1999

Neutron Scattering Investigation of Magnetic Bilayer Correlations in La 1.2 Sr 1.8 Mn 2 O 7 : Evidence of Canting above T C journal, November 1998

Low-energy spin-wave excitations in the bilayer manganite La1.2Sr1.8Mn2O7 journal, May 2000

Observation of Magnetic Domain Behavior in Colossal Magnetoresistive Materials With a Magnetic Force Microscope journal, June 1997

Grain-boundary effects on the magnetoresistance properties of perovskite manganite films journal, December 1996

Ferromagnetic Domain Structures and Nanoclusters in N d 1 / 2 S r 1 / 2 M n O 3 journal, October 2002

Charge-ordered ferromagnetic phase in La0.5Ca0.5MnO3 journal, December 2002

Role of structurally and magnetically modified nanoclusters in colossal magnetoresistance journal, December 2011

Optimal T C in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions journal, August 1999

Effect of layering and doping on the magnetic anisotropy of the layered manganites La2−2xSr1+2xMn2O7 ( x =0.3–0.4) journal, June 2001

Charge delocalization and structural response in layered La 1.2 Sr 1.8 Mn 2 O 7 : Enhanced distortion in the metallic regime journal, January 1997

A new symmetrized solution for phase retrieval using the transport of intensity equation journal, January 2002

Micromagnetic Imaging to Determine the Nature of the Ferromagnetic Phase Transition in La 0.7 Ca 0.3 MnO 3 journal, January 2006

Critical phenomena and renormalization-group theory journal, October 2002

Anomalous Lattice Distortion in Pr-Substituted Double-Layered Perovskite Manganite La 1.2 Sr 1.8 Mn 2 O 7 Single Crystals: II journal, June 2002

Temperature and field dependence of magnetic domains in La 1.2 Sr 1.8 Mn 2 O 7 journal, April 2015

Suppressed magnetization at the surfaces and interfaces of ferromagnetic metallic manganites journal, July 2007

In Situ Transmission Electron Microscopy book, January 2019

Lattice effects and magnetic structure in the layered colossal magnetoresistance manganite ${La}_{2 - 2 x} {Sr}_{1 + 2 x} {Mn}_{2} O_{7}, x = 0.3$
journal, April 1999

Interplay of spin and orbital ordering in the layered colossal magnetoresistance manganite ${La}_{2 - 2 x} {Sr}_{1 + 2 x} {Mn}_{2} O_{7} (0.5 <~ x <~ 1.0)$
journal, December 2000

Giant magnetoresistance of manganese oxides with a layered perovskite structure
journal, March 1996

Spectacular Doping Dependence of Interlayer Exchange and Other Results on Spin Waves in Bilayer Manganites
journal, October 2001

Fabrication and physical properties of c -axis oriented thin films of layered perovskite La2−2xSr1+2xMn2O7
journal, November 1998

Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites
journal, June 1999

Neutron Scattering Investigation of Magnetic Bilayer Correlations in ${La}_{1.2} {Sr}_{1.8} {Mn}_{2} O_{7}$ : Evidence of Canting above $T_{C}$
journal, November 1998

Low-energy spin-wave excitations in the bilayer manganite La1.2Sr1.8Mn2O7
journal, May 2000

Observation of Magnetic Domain Behavior in Colossal Magnetoresistive Materials With a Magnetic Force Microscope
journal, June 1997

Grain-boundary effects on the magnetoresistance properties of perovskite manganite films
journal, December 1996

Ferromagnetic Domain Structures and Nanoclusters in $N d_{1 / 2} S r_{1 / 2} M n O_{3}$
journal, October 2002

Charge-ordered ferromagnetic phase in La0.5Ca0.5MnO3
journal, December 2002

Role of structurally and magnetically modified nanoclusters in colossal magnetoresistance
journal, December 2011

Optimal $T_{C}$ in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions
journal, August 1999

Effect of layering and doping on the magnetic anisotropy of the layered manganites La2−2xSr1+2xMn2O7 ( x =0.3–0.4)
journal, June 2001

Charge delocalization and structural response in layered ${La}_{1.2}$ ${Sr}_{1.8}$ ${Mn}_{2}$ $O_{7}$ : Enhanced distortion in the metallic regime
journal, January 1997

A new symmetrized solution for phase retrieval using the transport of intensity equation
journal, January 2002

Micromagnetic Imaging to Determine the Nature of the Ferromagnetic Phase Transition in ${La}_{0.7} {Ca}_{0.3} {MnO}_{3}$
journal, January 2006

Critical phenomena and renormalization-group theory
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Anomalous Lattice Distortion in Pr-Substituted Double-Layered Perovskite Manganite La _1.2 Sr _1.8 Mn ₂ O ₇ Single Crystals: II
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Temperature and field dependence of magnetic domains in ${La}_{1.2} {Sr}_{1.8} {Mn}_{2} O_{7}$
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Suppressed magnetization at the surfaces and interfaces of ferromagnetic metallic manganites
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