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钙钛矿锰氧化物Nd_(0.5)Sr_(0.5-x)Ba_xMnO_3(x=0.1,0.2)多晶的ESR研究 被引量：1

Electron Spin Resonance of Perovskite Manganites Nd_(0.5)Sr_(0.5-x)Ba_xMnO_3(x=0.1,0.2) Polycrystalline
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摘要 通过固相反应法合成了Nd0.5Sr0.5-xBaxMnO3(x=0.1,0.2)多晶样品,通过SQUID、XRD和电子自旋共振谱仪(ESR),对样品的结构和磁性进行了研究.XRD检测结果发现样品为单相,空间群为Pbnm.磁性测量和ESR结果表明,在降温过程中,样品经历了铁磁有序转变、电荷有序转变和反铁磁转变.根据ESR谱线的参数随温度的变化测量了各个磁有序转变温度. Polycrystalline samples Nd0.5Sr0.5-xBaxMnO3（x=0.1,0.2） were prepared by conventional solid state reaction method. The structure and magnetic properties have been studied with X-ray diffraction patterns,SQUID and ESR. The samples are single phase, and the space group is an orthorhombic Pbnm symmetry. With the decrease of temperature, samples undergo ferromagnetic transition, charge-ordering and antiferromagnetie transition. The magnetic transition temperature was observed by the spectral lines ESR.
作者 冀钰 何利民 王洪金 邢茹 鲁毅 赵建军
机构地区 包头师范学院物理科学与技术学院
出处 《内蒙古师范大学学报（自然科学汉文版）》 CAS 北大核心 2013年第3期297-300,共4页 Journal of Inner Mongolia Normal University(Natural Science Edition)
基金 国家自然科学基金资助项目(11164019 50862007) 内蒙古自然科学基金资助项目(2011MS0101 2011MS0108) 内蒙古高等学校科学研究重点项目(NJZZ11166 NJ10163 NJZY12202)
关键词 钙钛矿锰氧化物 相分离 电子自旋共振 电荷有序 perovskite-type manganites phase separation electron spin resonance charge-ordering
分类号 O482.52 [理学—固体物理] O614.33 [理学—无机化学]
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参考文献15

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二级参考文献40

  • 1Jin S,Teifel T H,McCormack M,et al. Thousandfold change in resistivity in magnetoresistive La-Ca-Mn-O films [J]. Science,1994,264(5157) : 413.
  • 2Autret C, Gervais M.Gervais F.et al. Signature of ferromagnetism, antiferromagnetism, charge ordering and phase separation by electron paramagnetie resonance study in rare earth manganites, Ln1-xAx MnO3 (Ln=rare earth, A= Ca, Sr) [J ]. Solid State Science, 2004 ( 6 ) : 815.
  • 3Lu Yi,Li Qing-An, Di Nai-Li, et al. Magnetic properties of Ndo.5 Pb0.5-xSrxMnO3 materials [J]. Chin Phys, 2003, 12: 1301.
  • 4Yang Renfu, Sun Young, He Wei, et al. Observation of a Griffiths-like phase in bilayered manganites [J ]. Appl Plays Lett,2007,90 : 032502.
  • 5Lambert C A,Gervais M,Gervais F,et al. Role of Y and Ba doping on phase separation and magnetization steps in Nd0.5 Sr0.5 MnO3 by electron spin resonance [J]. Solid State Seience, 2005 (7) : 1035.
  • 6Shengelaya A,Zhao G M,Keller H, et al. EPR in La1-xCAx MnO3: RelAxation and bottleneck [J]. Phys Rev B, 2000, 61:5888.
  • 7Angappane S,Pattabiraman M, Rangarajan G,et al. Electron spin resonance study of Nd0.7 Sr0.3 MnO3 single crystals [J]. J Appl Phys,2005,97:10H705.
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  • 10Angappane S, Pattabiraman M, Rangarajan G, et al. Electron magnetic resonance study in a single crystal of the colossal magnetoresistance manganite Nd0.5 Sr0.5 MnO3 [J]. Phys Rev B, 2004,69 : 094437.

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内蒙古师范大学学报（自然科学汉文版）
2013年 第3期

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