Structure characteristics and valence state study for La 1-xKxTiO3 synthesized under high-pressure and high-temperature

Ji Peng Miao; Zhe Lü; Li Ping Li; Fan Long Ning; Zhi Guo Liu; Xi Qiang Huang; Yu Sui; Zheng Nan Qian; Wen Hui Su

doi:10.1016/j.jallcom.2004.06.038

Structure characteristics and valence state study for La _1-xK_xTiO₃ synthesized under high-pressure and high-temperature

Ji Peng Miao
, Zhe Lü
, Li Ping Li
, Fan Long Ning
, Zhi Guo Liu
, Xi Qiang Huang
, Yu Sui
, Zheng Nan Qian
, Wen Hui Su^*

^*Corresponding author for this work

School of Physics

Jilin University
Harbin Institute of Technology
CAS - International Center for Material Physics

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

8 Scopus citations

Abstract

By using a high-pressure and high-temperature method, perovskite oxides of the type La_1-xK_xTiO₃ (x = 0.30, 0.35, 0.40, 0.45, 0.50) with mixed valence state were synthesized. This new synthesis route has several advantages. XRD analysis shows a cubic cell for the samples. XPS of the surface and EPR measurements indicate that the Ti ions have a mixed valence of 3+ and 4+ and that A-cation vacancies exist in the samples. As x increases, the amount of Ti³⁺ ions and A-cation vacancies decreases. The valence state of the Ti ions can be altered by changing both pressure and temperature.

Original language	English
Pages (from-to)	287-291
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	387
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2004.06.038
State	Published - 25 Jan 2005

Keywords

EPR
High-pressure and -temperature synthesis
Mixed valence oxides
XPS

Access to Document

10.1016/j.jallcom.2004.06.038

Cite this

@article{df738b3ce1794f29a3cd302ab668bc2b,

title = "Structure characteristics and valence state study for La 1-xKxTiO3 synthesized under high-pressure and high-temperature",

abstract = "By using a high-pressure and high-temperature method, perovskite oxides of the type La1-xKxTiO3 (x = 0.30, 0.35, 0.40, 0.45, 0.50) with mixed valence state were synthesized. This new synthesis route has several advantages. XRD analysis shows a cubic cell for the samples. XPS of the surface and EPR measurements indicate that the Ti ions have a mixed valence of 3+ and 4+ and that A-cation vacancies exist in the samples. As x increases, the amount of Ti3+ ions and A-cation vacancies decreases. The valence state of the Ti ions can be altered by changing both pressure and temperature.",

keywords = "EPR, High-pressure and -temperature synthesis, Mixed valence oxides, XPS",

author = "Miao, \{Ji Peng\} and Zhe L{\"u} and Li, \{Li Ping\} and Ning, \{Fan Long\} and Liu, \{Zhi Guo\} and Huang, \{Xi Qiang\} and Yu Sui and Qian, \{Zheng Nan\} and Su, \{Wen Hui\}",

year = "2005",

month = jan,

day = "25",

doi = "10.1016/j.jallcom.2004.06.038",

language = "英语",

volume = "387",

pages = "287--291",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Structure characteristics and valence state study for La 1-xKxTiO3 synthesized under high-pressure and high-temperature

AU - Miao, Ji Peng

AU - Lü, Zhe

AU - Li, Li Ping

AU - Ning, Fan Long

AU - Liu, Zhi Guo

AU - Huang, Xi Qiang

AU - Sui, Yu

AU - Qian, Zheng Nan

AU - Su, Wen Hui

PY - 2005/1/25

Y1 - 2005/1/25

N2 - By using a high-pressure and high-temperature method, perovskite oxides of the type La1-xKxTiO3 (x = 0.30, 0.35, 0.40, 0.45, 0.50) with mixed valence state were synthesized. This new synthesis route has several advantages. XRD analysis shows a cubic cell for the samples. XPS of the surface and EPR measurements indicate that the Ti ions have a mixed valence of 3+ and 4+ and that A-cation vacancies exist in the samples. As x increases, the amount of Ti3+ ions and A-cation vacancies decreases. The valence state of the Ti ions can be altered by changing both pressure and temperature.

AB - By using a high-pressure and high-temperature method, perovskite oxides of the type La1-xKxTiO3 (x = 0.30, 0.35, 0.40, 0.45, 0.50) with mixed valence state were synthesized. This new synthesis route has several advantages. XRD analysis shows a cubic cell for the samples. XPS of the surface and EPR measurements indicate that the Ti ions have a mixed valence of 3+ and 4+ and that A-cation vacancies exist in the samples. As x increases, the amount of Ti3+ ions and A-cation vacancies decreases. The valence state of the Ti ions can be altered by changing both pressure and temperature.

KW - EPR

KW - High-pressure and -temperature synthesis

KW - Mixed valence oxides

KW - XPS

UR - https://www.scopus.com/pages/publications/10844273073

U2 - 10.1016/j.jallcom.2004.06.038

DO - 10.1016/j.jallcom.2004.06.038

M3 - 文章

AN - SCOPUS:10844273073

SN - 0925-8388

VL - 387

SP - 287

EP - 291

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Structure characteristics and valence state study for La _1-xK_xTiO₃ synthesized under high-pressure and high-temperature

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this