Utilizing total scattering to study the Jahn-Teller transition in La 1-xCaxMnO3

E. S. Božin; X. Qiu; R. J. Worhatch; G. Paglia; M. Schmidt; P. G. Radaelli; J. F. Mitchell; T. Chatterji; Th Proffen; S. J.L. Billinge

doi:10.1524/zksu.2007.2007.suppl_26.429

Utilizing total scattering to study the Jahn-Teller transition in La _1-xCa_xMnO₃

E. S. Božin, X. Qiu, R. J. Worhatch, G. Paglia, M. Schmidt, P. G. Radaelli, J. F. Mitchell, T. Chatterji, Th Proffen, S. J.L. Billinge

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

2 Scopus citations

Abstract

Total scattering based atomic pair distribution function (PDF) analysis, with the advent of high data throughput neutron powder diffractometers, helps understanding the nature of the Jahn-Teller (JT) phase transition in La _1-xCa_xMnO₃ colossal magnetoresistive (CMR) manganites. The JT distortion of the MnO₆ octahedra, is long-range ordered in the orthorhombic (O) phase, but disappears in the pseudo-cubic (O') phase crystallographically. An anomalous unit cell volume contraction occurs at the transition. The PDF study indicates that the distortion persists locally deep in the O' phase, contrary to the crystallographic view. Simultaneously, local structural features observed in PDF at 10.3 Å, sensitive to the oxygen sublattice changes, evolve dramatically across the transition. The same effect is observed irrespective of the way the O-O' phase boundary is crossed: it is seen both in the temperature series data for x=0, and in the doping series data at 310 K and at 550 K.

Original language	English
Pages (from-to)	429-434
Number of pages	6
Journal	Zeitschrift fur Kristallographie, Supplement
Volume	2
Issue number	26
DOIs	https://doi.org/10.1524/zksu.2007.2007.suppl_26.429
State	Published - 2007
Externally published	Yes

Keywords

Atomic pair distribution function
CMR manganites
Total scattering

Access to Document

10.1524/zksu.2007.2007.suppl_26.429

Cite this

@article{8224b593b97c47f08a8ca6c501687115,

title = "Utilizing total scattering to study the Jahn-Teller transition in La 1-xCaxMnO3",

abstract = "Total scattering based atomic pair distribution function (PDF) analysis, with the advent of high data throughput neutron powder diffractometers, helps understanding the nature of the Jahn-Teller (JT) phase transition in La 1-xCaxMnO3 colossal magnetoresistive (CMR) manganites. The JT distortion of the MnO6 octahedra, is long-range ordered in the orthorhombic (O) phase, but disappears in the pseudo-cubic (O') phase crystallographically. An anomalous unit cell volume contraction occurs at the transition. The PDF study indicates that the distortion persists locally deep in the O' phase, contrary to the crystallographic view. Simultaneously, local structural features observed in PDF at 10.3 {\AA}, sensitive to the oxygen sublattice changes, evolve dramatically across the transition. The same effect is observed irrespective of the way the O-O' phase boundary is crossed: it is seen both in the temperature series data for x=0, and in the doping series data at 310 K and at 550 K.",

keywords = "Atomic pair distribution function, CMR manganites, Total scattering",

author = "Bo{\v z}in, {E. S.} and X. Qiu and Worhatch, {R. J.} and G. Paglia and M. Schmidt and Radaelli, {P. G.} and Mitchell, {J. F.} and T. Chatterji and Th Proffen and Billinge, {S. J.L.}",

year = "2007",

doi = "10.1524/zksu.2007.2007.suppl_26.429",

language = "English",

volume = "2",

pages = "429--434",

journal = "Zeitschrift fur Kristallographie, Supplement",

issn = "0930-486X",

publisher = "De Gruyter",

number = "26",

}

TY - JOUR

T1 - Utilizing total scattering to study the Jahn-Teller transition in La 1-xCaxMnO3

AU - Božin, E. S.

AU - Qiu, X.

AU - Worhatch, R. J.

AU - Paglia, G.

AU - Schmidt, M.

AU - Radaelli, P. G.

AU - Mitchell, J. F.

AU - Chatterji, T.

AU - Proffen, Th

AU - Billinge, S. J.L.

PY - 2007

Y1 - 2007

N2 - Total scattering based atomic pair distribution function (PDF) analysis, with the advent of high data throughput neutron powder diffractometers, helps understanding the nature of the Jahn-Teller (JT) phase transition in La 1-xCaxMnO3 colossal magnetoresistive (CMR) manganites. The JT distortion of the MnO6 octahedra, is long-range ordered in the orthorhombic (O) phase, but disappears in the pseudo-cubic (O') phase crystallographically. An anomalous unit cell volume contraction occurs at the transition. The PDF study indicates that the distortion persists locally deep in the O' phase, contrary to the crystallographic view. Simultaneously, local structural features observed in PDF at 10.3 Å, sensitive to the oxygen sublattice changes, evolve dramatically across the transition. The same effect is observed irrespective of the way the O-O' phase boundary is crossed: it is seen both in the temperature series data for x=0, and in the doping series data at 310 K and at 550 K.

AB - Total scattering based atomic pair distribution function (PDF) analysis, with the advent of high data throughput neutron powder diffractometers, helps understanding the nature of the Jahn-Teller (JT) phase transition in La 1-xCaxMnO3 colossal magnetoresistive (CMR) manganites. The JT distortion of the MnO6 octahedra, is long-range ordered in the orthorhombic (O) phase, but disappears in the pseudo-cubic (O') phase crystallographically. An anomalous unit cell volume contraction occurs at the transition. The PDF study indicates that the distortion persists locally deep in the O' phase, contrary to the crystallographic view. Simultaneously, local structural features observed in PDF at 10.3 Å, sensitive to the oxygen sublattice changes, evolve dramatically across the transition. The same effect is observed irrespective of the way the O-O' phase boundary is crossed: it is seen both in the temperature series data for x=0, and in the doping series data at 310 K and at 550 K.

KW - Atomic pair distribution function

KW - CMR manganites

KW - Total scattering

UR - http://www.scopus.com/inward/record.url?scp=54849416679&partnerID=8YFLogxK

U2 - 10.1524/zksu.2007.2007.suppl_26.429

DO - 10.1524/zksu.2007.2007.suppl_26.429

M3 - Article

AN - SCOPUS:54849416679

SN - 0930-486X

VL - 2

SP - 429

EP - 434

JO - Zeitschrift fur Kristallographie, Supplement

JF - Zeitschrift fur Kristallographie, Supplement

IS - 26

ER -

Utilizing total scattering to study the Jahn-Teller transition in La _1-xCa_xMnO₃

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this