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Exchange bias effect in single crystalline phase MnO nanoparticles

Luo Yi Zhao Guo-Ping Yang Hai-Tao Song Ning-Ning Ren Xiao Ding Hao-Feng Cheng Zhao-Hua

Exchange bias effect in single crystalline phase MnO nanoparticles

Luo Yi, Zhao Guo-Ping, Yang Hai-Tao, Song Ning-Ning, Ren Xiao, Ding Hao-Feng, Cheng Zhao-Hua
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  • The MnO nanoparticles with uniform size (~15 nm) and shape have been synthesized in an inert atmosphers by high-temperature oil phase method. XRD patterns and HRTEM reveals that the as-synthesized MnO nanoparticles are of pure crystalline phase. TEM image shows that the MnO nanoparticles are in spherical shape with a narrow size distribution. Both oil phase and the nanoparticles protected with inert gas in the synthesis process can avoid the oxidization of Mn2+. The obvious exchange bias effect can be observed from the M-H loop of MnO nanoparticles under zero field cooling (ZFC) and FC measurements. Furthermore, the temperature-dependent AC susceptibility of the MnO nanoparticles reveals that the exchange bias effect originates from the antiferromagnetic MnO core and the spin-glass surface, rather than the superparamagnetic phase.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 51071173, 11274370, 50931006, 11074179), the National Basic Research Program of China (Grant Nos. 2010CB934202, 2011CB921801, and 2012CB933102), the Innovational Team Program of Sichuan Province (Grant No. 12TD008).
    [1]

    Sun S, Murray C B, Weller D, Folks L, Moser A 2000 Science 287 1989

    [2]

    Sahoo S, Petracic O, Kleemann W, Stappert S, Dumpich G, Nordblad P, Cardoso, Freitas P 2003 Appl. Phys. Lett. 82 4116

    [3]

    Yang H T, Hasegawa D, Takahashi M, Ogawa T 2009 Appl. Phys. Lett. 94 013103

    [4]

    Brannon-Peppas L, Blanchette J O 2004 Adv. Drug Deliv. Rev. 56 1649

    [5]

    Gu H, Xu K, Xu C, Xu B 2006 Chem. Commun. 9 941

    [6]

    Meiklejohn W H, Bean C P 1956 Phys. Rev. 102 1413

    [7]

    Meiklejohn W H, Bean C P 1957 Phys. Rev. 105 904

    [8]

    Skumryev V, Stoyanov S, Zhang Y, Hadjipanayis G, Givord D, Nogués J 2003 Nature (London) 423 850

    [9]

    Salazar-Alvarez G, Sort J, Suriñach S, Dolors Baro M, Nogués J 2007 J. Am. Chem. Soc. 129 9102

    [10]

    Berkowitz A E, Rodriguez G F, Hong J I, An K, Hyeon T, Agarwal N, Smith D J, Fullerton E F 2008 Phys. Rev. B 77 024403

    [11]

    López-Ortega A, Tobia D, Winkler E, Golosovsky I V, Salazar-Alvarez G, Estradé S, Estrader M, Sort J M, González A, Suriñach S, Arbiol J, Peiró F, Zysler R D, Baró M D, Nogués J 2010 J. Am. Chem. Soc. 132 9398

    [12]

    Schladt T D, Graf T, Tremel W 2009 Chem. Mater. 21 3183

    [13]

    Golosovsky I V, Salazar-Alvarez G, Lpez-Ortega A, González M A, Sort J, Estrader M, Suriñach S, Bar M D, Nogués J 2009 Phys. Rev. Lett. 102 247201

    [14]

    Tang Y K, Sun Y, Cheng Z H 2006 Phys. Rev. B 73 012409

    [15]

    Tang Y K, Sun Y, Cheng Z H 2006 Phys. Rev. B 73 174419

    [16]

    Zhang X K, Tang S L, Li Y L, Du Y W 2010 Phys. Lett. A 374 2175

    [17]

    He L 2011 J. Appl. Phys. 109 123915

    [18]

    Mulder C A M, Vanduyneveldt A J, Mydosh J A 1981 Phys. Rev. B 23 1384

    [19]

    Mydosh J A 1993 Spin Glasses: An Experimental Introduction (Taylor & Francis, London)

    [20]

    Chu H F, Li J, Li S, Li S L, Wang J, Gao Y L, Deng H, Wang N, Zhang Y, Wu Y L, Zheng D N 2010 Acta. Phys. Sin. 59 6585 (in Chinese) [储海峰, 李洁, 李绍, 黎松林, 王佳, 高艳丽, 邓辉, 王宁, 张玉, 吴玉林, 郑东宁 2010 物理学报 59 6585]

    [21]

    Kodama R H, Makhlouf S A, Berkowitz A E 1997 Phys. Rev. Lett. 79 1393

    [22]

    Liu N, Yan G Q, Mao Q, Wang G Y, Guo H Y 2010 Acta. Phys. Sin. 59 5759 (in Chinese) [刘宁, 严国清, 毛强, 王桂英, 郭焕银 2010 物理学报 59 5759]

    [23]

    Ganguly S, Kabir M, Sanyal B, Mookerjee A 2011 Phys. Rev. B 83 020411

    [24]

    Duan H N, Yuan S L, Zheng X F, Tian Z M 2012 Chin. Phys. B 21 078101

    [25]

    Dai S Y, Shen B G, Wang Z Q 1986 Acta. Phys. Sin. 35 657 (in Chinese) [戴守愚, 沈保根, 王忠铨 1986 物理学报 35 657]

    [26]

    Zhang K C, Song P Y 2010 Chin. Phys. B 19 097105

    [27]

    Zhang F C, Chen W R, Gong W Z, Xu B, Qiu X G, Zhao B R 2004 Chin. Phys. B 13 783

    [28]

    Wu B M, Auloos M, Du Y L, Zheng W H, Li B, Fagnard J F, Vanderbemden P 2005 Chin. Phys. Lett. 22 686

  • [1]

    Sun S, Murray C B, Weller D, Folks L, Moser A 2000 Science 287 1989

    [2]

    Sahoo S, Petracic O, Kleemann W, Stappert S, Dumpich G, Nordblad P, Cardoso, Freitas P 2003 Appl. Phys. Lett. 82 4116

    [3]

    Yang H T, Hasegawa D, Takahashi M, Ogawa T 2009 Appl. Phys. Lett. 94 013103

    [4]

    Brannon-Peppas L, Blanchette J O 2004 Adv. Drug Deliv. Rev. 56 1649

    [5]

    Gu H, Xu K, Xu C, Xu B 2006 Chem. Commun. 9 941

    [6]

    Meiklejohn W H, Bean C P 1956 Phys. Rev. 102 1413

    [7]

    Meiklejohn W H, Bean C P 1957 Phys. Rev. 105 904

    [8]

    Skumryev V, Stoyanov S, Zhang Y, Hadjipanayis G, Givord D, Nogués J 2003 Nature (London) 423 850

    [9]

    Salazar-Alvarez G, Sort J, Suriñach S, Dolors Baro M, Nogués J 2007 J. Am. Chem. Soc. 129 9102

    [10]

    Berkowitz A E, Rodriguez G F, Hong J I, An K, Hyeon T, Agarwal N, Smith D J, Fullerton E F 2008 Phys. Rev. B 77 024403

    [11]

    López-Ortega A, Tobia D, Winkler E, Golosovsky I V, Salazar-Alvarez G, Estradé S, Estrader M, Sort J M, González A, Suriñach S, Arbiol J, Peiró F, Zysler R D, Baró M D, Nogués J 2010 J. Am. Chem. Soc. 132 9398

    [12]

    Schladt T D, Graf T, Tremel W 2009 Chem. Mater. 21 3183

    [13]

    Golosovsky I V, Salazar-Alvarez G, Lpez-Ortega A, González M A, Sort J, Estrader M, Suriñach S, Bar M D, Nogués J 2009 Phys. Rev. Lett. 102 247201

    [14]

    Tang Y K, Sun Y, Cheng Z H 2006 Phys. Rev. B 73 012409

    [15]

    Tang Y K, Sun Y, Cheng Z H 2006 Phys. Rev. B 73 174419

    [16]

    Zhang X K, Tang S L, Li Y L, Du Y W 2010 Phys. Lett. A 374 2175

    [17]

    He L 2011 J. Appl. Phys. 109 123915

    [18]

    Mulder C A M, Vanduyneveldt A J, Mydosh J A 1981 Phys. Rev. B 23 1384

    [19]

    Mydosh J A 1993 Spin Glasses: An Experimental Introduction (Taylor & Francis, London)

    [20]

    Chu H F, Li J, Li S, Li S L, Wang J, Gao Y L, Deng H, Wang N, Zhang Y, Wu Y L, Zheng D N 2010 Acta. Phys. Sin. 59 6585 (in Chinese) [储海峰, 李洁, 李绍, 黎松林, 王佳, 高艳丽, 邓辉, 王宁, 张玉, 吴玉林, 郑东宁 2010 物理学报 59 6585]

    [21]

    Kodama R H, Makhlouf S A, Berkowitz A E 1997 Phys. Rev. Lett. 79 1393

    [22]

    Liu N, Yan G Q, Mao Q, Wang G Y, Guo H Y 2010 Acta. Phys. Sin. 59 5759 (in Chinese) [刘宁, 严国清, 毛强, 王桂英, 郭焕银 2010 物理学报 59 5759]

    [23]

    Ganguly S, Kabir M, Sanyal B, Mookerjee A 2011 Phys. Rev. B 83 020411

    [24]

    Duan H N, Yuan S L, Zheng X F, Tian Z M 2012 Chin. Phys. B 21 078101

    [25]

    Dai S Y, Shen B G, Wang Z Q 1986 Acta. Phys. Sin. 35 657 (in Chinese) [戴守愚, 沈保根, 王忠铨 1986 物理学报 35 657]

    [26]

    Zhang K C, Song P Y 2010 Chin. Phys. B 19 097105

    [27]

    Zhang F C, Chen W R, Gong W Z, Xu B, Qiu X G, Zhao B R 2004 Chin. Phys. B 13 783

    [28]

    Wu B M, Auloos M, Du Y L, Zheng W H, Li B, Fagnard J F, Vanderbemden P 2005 Chin. Phys. Lett. 22 686

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  • Received Date:  11 March 2013
  • Accepted Date:  23 May 2013
  • Published Online:  05 September 2013

Exchange bias effect in single crystalline phase MnO nanoparticles

  • 1. College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610068, China;
  • 2. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 51071173, 11274370, 50931006, 11074179), the National Basic Research Program of China (Grant Nos. 2010CB934202, 2011CB921801, and 2012CB933102), the Innovational Team Program of Sichuan Province (Grant No. 12TD008).

Abstract: The MnO nanoparticles with uniform size (~15 nm) and shape have been synthesized in an inert atmosphers by high-temperature oil phase method. XRD patterns and HRTEM reveals that the as-synthesized MnO nanoparticles are of pure crystalline phase. TEM image shows that the MnO nanoparticles are in spherical shape with a narrow size distribution. Both oil phase and the nanoparticles protected with inert gas in the synthesis process can avoid the oxidization of Mn2+. The obvious exchange bias effect can be observed from the M-H loop of MnO nanoparticles under zero field cooling (ZFC) and FC measurements. Furthermore, the temperature-dependent AC susceptibility of the MnO nanoparticles reveals that the exchange bias effect originates from the antiferromagnetic MnO core and the spin-glass surface, rather than the superparamagnetic phase.

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