Transport and magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ba</mml:mi></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">CoO</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Mandal, P.; Choudhury, Pranab; Biswas, S.K.; Ghosh, Barnali

doi:10.1103/physrevb.70.104407

Cited by 54 publications

(50 citation statements)

References 41 publications

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“…The results of magnetic susceptibility (see Fig. 5) obtained here forthe spray-dried sample (T cusp~2 0 K) agree well with the behavior reported by Nam et al [36], whereas other authors [29,37,38] found an irreversibility temperature of ~200 K. The main difference between these literature reports is the duration of the heat treatment: the sample of Nam et al [36] was prepared by solidstate reaction using a 2-month heat treatment. These authors stressed the importance of a homogeneous distribution of strontium cations to prevent any ferromagnetic cluster effects [36].…”

Section: Discussionsupporting

confidence: 62%

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Spray drying: An alternative synthesis method for polycationic oxide compounds

Rivas‐Murias

Fagnard

Vanderbemden

et al. 2011

Journal of Physics and Chemistry of Solids

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Synthesis of polycationic compounds by the spray-drying technique is an interesting alternative in the domain of aqueous precursor synthesis methods. Spray drying yields high quality samples with good reproducibility. The possibility of scaling up for production of large quantities with fast processing time is well established by the commercial availability of powders of various compositions. In this paper, we have discussed the advantages and limitations of this method and demonstrated its interest by synthesizing a few polycationic compounds selected for their attractive properties of thermoelectricity [Bi 1.68

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Section: Discussionsupporting

confidence: 62%

“…4b), the electrical conductivity increases with temperature up to 700 K and then decreases slightly. The obtained values are slightly higher than those reported in the literature [18,28,29]. The Seebeck coefficient (Fig.…”

Section: Magnetic Transport And/or Thermoelectrical Propertiescontrasting

confidence: 52%

Spray drying: An alternative synthesis method for polycationic oxide compounds

Rivas‐Murias

Fagnard

Vanderbemden

et al. 2011

Journal of Physics and Chemistry of Solids

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“…En particular, la familia de cobaltitas de la forma La1-xRxCoO3 (R = Ba, Sr) ha despertado gran interés debido a la peculiar forma en que cambian sus propiedades magneto-eléctricas con la concentración del agente dopante y la temperatura. Los diagramas de fase son un referente para el análisis de las propiedades magnéticas y eléctricas de los sistemas, para estos sistemas se observó un diagrama de fases inusual en donde el comportamiento eléctrico puede coexistir entre dos diferentes estados magnéticos (MANDAL, 2004;WU, et al, 2003). Además, el aumento en la concentración Sr o Ba, permite que el sistema se convierta en un material metálico ferromagnético con momento magnético efectivo de considerables dimensiones.…”

Section: Introductionunclassified

PROPIEDADES ESTRUCTURALES, ELÉCTRICAS Y MAGNÉTICAS EN EL SISTEMA Na0.25 Ba0.75CoO3

Rodriguez

Vargas

2017

BISTUA

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Se reportan las propiedades estructurales, magnéticas y eléctricas del sistema Na0.25Ba0.75CoO3 producido por el método de reacción en estado sólido. Los análisis de difracción de rayos X, permitieron inferir que el compuesto cristaliza en una estructura cristalina ortorrómbica de grupo espacial C2/mmmcon parámetros de red: a = 4.56 Å, b = 5.61 Å y c = 10.98 Å. A partir de los datos de magnetización M (T) y M (H) se observó un comportamiento paramagnético. El ajuste de los datos de susceptibilidad permitió obtener un momento magnético efectivo de 2.17 (4) mB similar al valor del momento magnético efectivo de iones tetravalentes Co4+ (2.165 mB) con S = 1/2 en el estado de bajo espín con factor de Landé g » 2.5. A partir de la resistividad se observó un estado aislante por debajo de 100 K, mientras que por encima de 200 K la resistividad presenta independencia térmica. Palabras clave: paramagnetico, estructura cristalina, momento magnético efectivo, aislante

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“…28 To the best of our knowledge, the experimental values of relaxation time and electrical conductivities in high-temperature region are not available for this compound. Therefore, the comparison of adopted relaxation time and calculated values of electrical conductivities by using these relaxation time are not possible in the present study.…”

Section: +mentioning

confidence: 99%

“…Transport and magnetic properties of barium doped LaCoO 3 compound has been studied by several authors. [25][26][27][28][29][30] Mandal et al have studied the temperature dependent Seebeck coefficient of this compound up to 335 K. To the best of our knowledge, the high temperature thermopower behavior of La0.75Ba0.25CoO3 compound has not been explored so far. Also, the detailed study of TE properties of this compound using electronic band structure is still lacking in the literature.…”

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confidence: 99%

An important role of temperature dependent scattering time in understanding the high temperature thermoelectric behavior of strongly correlated system: La_0.75Ba_0.25CoO₃

Singh

Kumar

Pandey

2017

J. Phys.: Condens. Matter

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In the present work, we have reported the temperature dependent thermopower (α) behavior of La0.75Ba0.25CoO3 compound in the temperature range 300-600 K. Using the Heikes formula, the estimated value of α corresponding to high-spin configuration of Co 3+ and Co 4+ ions is found to be ∼16 µV/K, which is close to the experimental value, ∼13 µV/K, observed at ∼600 K. The temperature dependent TE behavior of the compound is studied by combining the WIEN2K and BoltzTrap code. The self consistency field calculations show that the compound have ferromagnetic ground state structure. The electronic structure calculations give half metallic characteristic with a small gap of ∼50 meV for down spin channel. The large and positive value for down spin channel is obtained due to the unique band structure shown by this spin channel. The temperature dependent relaxation time for both the spin-channel charge carriers is considered to study the thermopower data in temperature range 300-600 K. An almost linear values of τup and a non-linear values of τ dn are taken into account for evaluation of α. By taking the temperature dependent values of relaxation time for both the spin channels, the calculated values of α using two current model are found to be in good agreement with experimental values in the temperature range 300-600 K. At 300 K, the calculated value of electrical conductivity by using the same value of relaxation time, i.e. 0.1 ×10 −14 seconds for spin-up and 0.66 ×10 −14 seconds for spin-dn channel, is found to be equal to the experimentally reported value.

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Transport and magnetic properties ofLa1−xBaxCoO3

Cited by 54 publications

References 41 publications

Spray drying: An alternative synthesis method for polycationic oxide compounds

Spray drying: An alternative synthesis method for polycationic oxide compounds

PROPIEDADES ESTRUCTURALES, ELÉCTRICAS Y MAGNÉTICAS EN EL SISTEMA Na0.25 Ba0.75CoO3

An important role of temperature dependent scattering time in understanding the high temperature thermoelectric behavior of strongly correlated system: La_0.75Ba_0.25CoO₃

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Transport and magnetic properties ofLa1−xBaxCoO3

Cited by 54 publications

References 41 publications

Spray drying: An alternative synthesis method for polycationic oxide compounds

Spray drying: An alternative synthesis method for polycationic oxide compounds

PROPIEDADES ESTRUCTURALES, ELÉCTRICAS Y MAGNÉTICAS EN EL SISTEMA Na0.25 Ba0.75CoO3

An important role of temperature dependent scattering time in understanding the high temperature thermoelectric behavior of strongly correlated system: La0.75Ba0.25CoO3

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An important role of temperature dependent scattering time in understanding the high temperature thermoelectric behavior of strongly correlated system: La_0.75Ba_0.25CoO₃