Synthesis and electrical properties of (La1-xMx)3Ni2TaO9 (M = Ca, Sr)

Sumio Kato; Takao Sakamoto; Norihito Watanabe; Mikio Sugai; Yozo Ohshima; Hirotsugu Takizawa; Masahiko Shimada

doi:10.1016/0167-577X(94)90131-7

Synthesis and electrical properties of (La_1-xM_x)₃Ni₂TaO₉ (M = Ca, Sr)

Sumio Kato, Takao Sakamoto, Norihito Watanabe, Mikio Sugai, Yozo Ohshima, Hirotsugu Takizawa, Masahiko Shimada

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Abstract

Perovskite related compounds, (La_1-xM_x)₃Ni₂TaO₉ (M = Ca, Sr), were synthesized by the metal nitrate decomposition method. Single-phase solid solutions were obtained in the composition range 0≤x≤0.20 in both (M = Ca, Sr) systems. The crystal structure of the solid solutions is slightly distorted (NH₄)₃FeF₆-type structure. All the solid solutions exhibit p-type behavior with activation energies in the range from 0.13 to 0.22 eV. The value of the Seebeck coefficient of the solid solutions indicates the existence of hole carriers. The behavior of the compositional dependence of the unit cell volume indicates the presence of Ni³⁺ ions.

Original language	English
Pages (from-to)	101-104
Number of pages	4
Journal	Materials Letters
Volume	21
Issue number	1
DOIs	https://doi.org/10.1016/0167-577X(94)90131-7
Publication status	Published - 1994 Jan 1

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "Perovskite related compounds, (La1-xMx)3Ni2TaO9 (M = Ca, Sr), were synthesized by the metal nitrate decomposition method. Single-phase solid solutions were obtained in the composition range 0≤x≤0.20 in both (M = Ca, Sr) systems. The crystal structure of the solid solutions is slightly distorted (NH4)3FeF6-type structure. All the solid solutions exhibit p-type behavior with activation energies in the range from 0.13 to 0.22 eV. The value of the Seebeck coefficient of the solid solutions indicates the existence of hole carriers. The behavior of the compositional dependence of the unit cell volume indicates the presence of Ni3+ ions.",

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T1 - Synthesis and electrical properties of (La1-xMx)3Ni2TaO9 (M = Ca, Sr)

AU - Kato, Sumio

AU - Sakamoto, Takao

AU - Watanabe, Norihito

AU - Sugai, Mikio

AU - Ohshima, Yozo

AU - Takizawa, Hirotsugu

AU - Shimada, Masahiko

PY - 1994/1/1

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N2 - Perovskite related compounds, (La1-xMx)3Ni2TaO9 (M = Ca, Sr), were synthesized by the metal nitrate decomposition method. Single-phase solid solutions were obtained in the composition range 0≤x≤0.20 in both (M = Ca, Sr) systems. The crystal structure of the solid solutions is slightly distorted (NH4)3FeF6-type structure. All the solid solutions exhibit p-type behavior with activation energies in the range from 0.13 to 0.22 eV. The value of the Seebeck coefficient of the solid solutions indicates the existence of hole carriers. The behavior of the compositional dependence of the unit cell volume indicates the presence of Ni3+ ions.

AB - Perovskite related compounds, (La1-xMx)3Ni2TaO9 (M = Ca, Sr), were synthesized by the metal nitrate decomposition method. Single-phase solid solutions were obtained in the composition range 0≤x≤0.20 in both (M = Ca, Sr) systems. The crystal structure of the solid solutions is slightly distorted (NH4)3FeF6-type structure. All the solid solutions exhibit p-type behavior with activation energies in the range from 0.13 to 0.22 eV. The value of the Seebeck coefficient of the solid solutions indicates the existence of hole carriers. The behavior of the compositional dependence of the unit cell volume indicates the presence of Ni3+ ions.

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Synthesis and electrical properties of (La_1-xM_x)₃Ni₂TaO₉ (M = Ca, Sr)

Abstract

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