(1. 中國科學(xué)技術(shù)大學(xué) 火災(zāi)科學(xué)國家重點(diǎn)實驗室，
合肥 230026;
2. 中國科技大學(xué) 物理系，合肥 230026)
摘 要: 采用水熱技術(shù)合成了CaV4O9納米晶。還原水合肼對產(chǎn)物的形成起著關(guān)鍵作用。通過粉末X射線衍射譜，X射線光電子能譜，透射電子顯微鏡和X射線能量色散譜等分析方法表征了所合成CaV4O9納米晶的結(jié)構(gòu)和組成。對其變溫磁化率的測量表明產(chǎn)物具有二維量子自旋效應(yīng)。討論了化學(xué)條件的變化對合成產(chǎn)物的影響。
關(guān)鍵字: CaV4O9;納米結(jié)構(gòu)；水熱合成；磁化率
magnetic property of
nanocrystalline CaV4O9
CHEN Sheng-zhong1, CHEN Xian-hui2
（1. State Key Laboratory of Fire Science,
University of Science and Technology of China,
Hefei 230026, China;
2. Department of Physics, University of Science and
Technology of China, Hefei 230026, China）
Abstract:Nanocrystalline CaV4O9 has been synthesized by hydrothermal method. The reducing agent N2H4 plays a key role in the formation of the product. The sample has been characterized by means of X-ray powder diffraction, transmission electron microscopy, X-ray photoelectron spectra and X-ray energy dispersive spectroscopy techniques. The magnetic susceptibility measurements on the sample reflect the low dimensional nature of the spin system. The reaction details and features are described and discussed.
Key words: CaV4O9; nanostructure; hydrothermal synthesis; magnetic properties
