A -site dependent percolative thermopower and Griffiths phase in Pr (0.7-x)Ho xSr 0.3MnO 3 (x=0.0, 0.04, 0.08, and 0.1)

N. Rama; M. Opel; V. Sankaranarayanan; R. Gross; S. B. Ogale; T. Venkatesan; M. S.Ramachandra Rao

doi:10.1063/1.1855613

A -site dependent percolative thermopower and Griffiths phase in Pr _(0.7-x)Ho _xSr _0.3MnO ₃ (x=0.0, 0.04, 0.08, and 0.1)

N. Rama
, M. Opel
, V. Sankaranarayanan
, R. Gross
, S. B. Ogale
, T. Venkatesan
, M. S.Ramachandra Rao

Indian Institute of Technology Madras
Walther-Meissner-Institut
University of Maryland, College Park

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

3 Scopus citations

Abstract

We report our analysis of thermopower S (T) of Pr(0.7-x) Hox Sr0.3 Mn O3 (x=0, 0.04, 0.08, and 0.1) compounds within a percolative framework and correlate the results with the existence of a Griffiths phase. The Griffiths temperature, at which ferromagnetic metallic clusters nucleate above TC, is evaluated. We further show that the Griffiths phase extends over a higher temperature range above TC with increase in the variance of ionic radii of the A site.

Original language	English
Article number	10H713
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1855613
State	Published - 15 May 2005
Externally published	Yes

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title = "A -site dependent percolative thermopower and Griffiths phase in Pr (0.7-x)Ho xSr 0.3MnO 3 (x=0.0, 0.04, 0.08, and 0.1)",

abstract = "We report our analysis of thermopower S (T) of Pr(0.7-x) Hox Sr0.3 Mn O3 (x=0, 0.04, 0.08, and 0.1) compounds within a percolative framework and correlate the results with the existence of a Griffiths phase. The Griffiths temperature, at which ferromagnetic metallic clusters nucleate above TC, is evaluated. We further show that the Griffiths phase extends over a higher temperature range above TC with increase in the variance of ionic radii of the A site.",

author = "N. Rama and M. Opel and V. Sankaranarayanan and R. Gross and Ogale, \{S. B.\} and T. Venkatesan and Rao, \{M. S.Ramachandra\}",

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doi = "10.1063/1.1855613",

language = "English",

volume = "97",

journal = "Journal of Applied Physics",

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T1 - A -site dependent percolative thermopower and Griffiths phase in Pr (0.7-x)Ho xSr 0.3MnO 3 (x=0.0, 0.04, 0.08, and 0.1)

AU - Rama, N.

AU - Opel, M.

AU - Sankaranarayanan, V.

AU - Gross, R.

AU - Ogale, S. B.

AU - Venkatesan, T.

AU - Rao, M. S.Ramachandra

PY - 2005/5/15

Y1 - 2005/5/15

N2 - We report our analysis of thermopower S (T) of Pr(0.7-x) Hox Sr0.3 Mn O3 (x=0, 0.04, 0.08, and 0.1) compounds within a percolative framework and correlate the results with the existence of a Griffiths phase. The Griffiths temperature, at which ferromagnetic metallic clusters nucleate above TC, is evaluated. We further show that the Griffiths phase extends over a higher temperature range above TC with increase in the variance of ionic radii of the A site.

AB - We report our analysis of thermopower S (T) of Pr(0.7-x) Hox Sr0.3 Mn O3 (x=0, 0.04, 0.08, and 0.1) compounds within a percolative framework and correlate the results with the existence of a Griffiths phase. The Griffiths temperature, at which ferromagnetic metallic clusters nucleate above TC, is evaluated. We further show that the Griffiths phase extends over a higher temperature range above TC with increase in the variance of ionic radii of the A site.

UR - https://www.scopus.com/pages/publications/20944450225

U2 - 10.1063/1.1855613

DO - 10.1063/1.1855613

M3 - Article

AN - SCOPUS:20944450225

SN - 0021-8979

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 10

M1 - 10H713

ER -

A -site dependent percolative thermopower and Griffiths phase in Pr _(0.7-x)Ho _xSr _0.3MnO ₃ (x=0.0, 0.04, 0.08, and 0.1)

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