Controllable synthesis and magnetic property of BiMn2O5 crystals

Rui Jie Jia; Jian Tao Han; Xiao Jing Wu; Chang Liang Wu; Yun Hui Huang; Wei Huang

doi:10.1016/j.materresbull.2007.07.023

Controllable synthesis and magnetic property of BiMn₂O₅ crystals

Rui Jie Jia, Jian Tao Han, Xiao Jing Wu, Chang Liang Wu, Yun Hui Huang, Wei Huang

Fudan University

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

21 Scopus citations

Abstract

Uniform submicron BiMn₂O₅ particles were prepared via a facile one-step hydrothermal route at low temperature. Bi(NO₃)₃, MnCl₂·4H₂O and KMnO₄ were used as starting materials; KOH as a pH adjustor and also as a mineralizer. Single-crystalline orthorhombic BiMn₂O₅ sample with controllable morphology was obtained. The microstructure strongly depends on the molar ratio of the starting materials, KOH concentration and reaction temperature. X-ray photoelectron spectroscopy shows the existence of Mn⁴⁺ state. Magnetic measurement indicates Néel temperature T_N at 44 K. The susceptibility above T_N obeys the Curie-Weiss law, χ = C/(T - θ), with θ = -350 K. The effective paramagnetic moment μ_eff = 4.66 μ_B/Mn, demonstrating the coexistence of mixed Mn³⁺ and Mn⁴⁺ valences.

Original language	English
Pages (from-to)	1702-1708
Number of pages	7
Journal	Materials Research Bulletin
Volume	43
Issue number	7
DOIs	https://doi.org/10.1016/j.materresbull.2007.07.023
State	Published - 1 Jul 2008
Externally published	Yes

Keywords

A. Oxides
B. Chemical synthesis
C. Electron microscopy
D. Magnetic properties
D. Microstructure

Access to Document

10.1016/j.materresbull.2007.07.023

Cite this

@article{a478bc2637194ba1835d83fa49da6c8c,

title = "Controllable synthesis and magnetic property of BiMn2O5 crystals",

abstract = "Uniform submicron BiMn2O5 particles were prepared via a facile one-step hydrothermal route at low temperature. Bi(NO3)3, MnCl2·4H2O and KMnO4 were used as starting materials; KOH as a pH adjustor and also as a mineralizer. Single-crystalline orthorhombic BiMn2O5 sample with controllable morphology was obtained. The microstructure strongly depends on the molar ratio of the starting materials, KOH concentration and reaction temperature. X-ray photoelectron spectroscopy shows the existence of Mn4+ state. Magnetic measurement indicates N{\'e}el temperature TN at 44 K. The susceptibility above TN obeys the Curie-Weiss law, χ = C/(T - θ), with θ = -350 K. The effective paramagnetic moment μeff = 4.66 μB/Mn, demonstrating the coexistence of mixed Mn3+ and Mn4+ valences.",

keywords = "A. Oxides, B. Chemical synthesis, C. Electron microscopy, D. Magnetic properties, D. Microstructure",

author = "Jia, {Rui Jie} and Han, {Jian Tao} and Wu, {Xiao Jing} and Wu, {Chang Liang} and Huang, {Yun Hui} and Wei Huang",

year = "2008",

month = jul,

day = "1",

doi = "10.1016/j.materresbull.2007.07.023",

language = "英语",

volume = "43",

pages = "1702--1708",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd",

number = "7",

}

TY - JOUR

T1 - Controllable synthesis and magnetic property of BiMn2O5 crystals

AU - Jia, Rui Jie

AU - Han, Jian Tao

AU - Wu, Xiao Jing

AU - Wu, Chang Liang

AU - Huang, Yun Hui

AU - Huang, Wei

PY - 2008/7/1

Y1 - 2008/7/1

N2 - Uniform submicron BiMn2O5 particles were prepared via a facile one-step hydrothermal route at low temperature. Bi(NO3)3, MnCl2·4H2O and KMnO4 were used as starting materials; KOH as a pH adjustor and also as a mineralizer. Single-crystalline orthorhombic BiMn2O5 sample with controllable morphology was obtained. The microstructure strongly depends on the molar ratio of the starting materials, KOH concentration and reaction temperature. X-ray photoelectron spectroscopy shows the existence of Mn4+ state. Magnetic measurement indicates Néel temperature TN at 44 K. The susceptibility above TN obeys the Curie-Weiss law, χ = C/(T - θ), with θ = -350 K. The effective paramagnetic moment μeff = 4.66 μB/Mn, demonstrating the coexistence of mixed Mn3+ and Mn4+ valences.

AB - Uniform submicron BiMn2O5 particles were prepared via a facile one-step hydrothermal route at low temperature. Bi(NO3)3, MnCl2·4H2O and KMnO4 were used as starting materials; KOH as a pH adjustor and also as a mineralizer. Single-crystalline orthorhombic BiMn2O5 sample with controllable morphology was obtained. The microstructure strongly depends on the molar ratio of the starting materials, KOH concentration and reaction temperature. X-ray photoelectron spectroscopy shows the existence of Mn4+ state. Magnetic measurement indicates Néel temperature TN at 44 K. The susceptibility above TN obeys the Curie-Weiss law, χ = C/(T - θ), with θ = -350 K. The effective paramagnetic moment μeff = 4.66 μB/Mn, demonstrating the coexistence of mixed Mn3+ and Mn4+ valences.

KW - A. Oxides

KW - B. Chemical synthesis

KW - C. Electron microscopy

KW - D. Magnetic properties

KW - D. Microstructure

UR - http://www.scopus.com/inward/record.url?scp=44049107501&partnerID=8YFLogxK

U2 - 10.1016/j.materresbull.2007.07.023

DO - 10.1016/j.materresbull.2007.07.023

M3 - 文章

AN - SCOPUS:44049107501

SN - 0025-5408

VL - 43

SP - 1702

EP - 1708

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 7

ER -

Controllable synthesis and magnetic property of BiMn₂O₅ crystals

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this