Pr掺杂DyFeO3体系的自旋重取向相变、晶格畸变与Raman光谱研究

刘明; 曹世勋; 袁淑娟; 康保娟; 鲁波; 张金仓

doi:10.7498/aps.62.147601

摘要

利用固相反应法制备了Dy1-xPrxFeO3系列化合物. X射线粉末衍射晶体结构分析表明, 随着Pr掺杂量x的增加, 样品晶胞体积逐渐增大, 晶格畸变减弱. Raman光谱测量表明稀土离子有效质量[meff=xmPr+(1-x)mDy] 与晶格结构的变化共同导致该体系Raman光谱的变化. 随Pr掺杂量的增加, 波数小于200 cm-1的振动模式基本保持不变, 而波数大于200 cm-1的振动模式(除420 cm-1处的B3u模式外)向低频移动. 磁测量结果表明, 由Dzyaloshinsky-Moriya 相互作用导致的宏观磁性随Pr掺杂量增加逐渐减弱. 稀土离子与铁离子磁晶格的耦合作用以及晶格结构畸变的变化共同导致该体系自旋重取向相变温度在一定的掺杂量 (x=0.3)前后先升高后降低.

关键词:

Abstract

Pr doped rare-earth orthoferrites DyFeO3 is synthesized by solid state reaction. X-ray diffraction shows that the lattice parameters of Dy1-xPrxFeO3increase and distortion of lattice decreases with Pr content x increasing. Raman spectroscopy reveals that the change of effective mass (meff) [meff=xmPr+(1-x)mDy] together with lattice structure change results in the shift of vibration modes. With the increase of Pr content, Raman modes of wave number less than 200 cm-1 remain constant, but the modes of wave number greater than 200 cm-1 decrease with Pr content increasing (except the mode B3u near 420 cm-1). The weak ferromagnetic ordering, created by Dzyaloshinsky-Moriya interaction, is reduced with doping level increasing. The interaction of rare earth ions with Fe3+ ion, together with the change of lattice distortion, results in the increasing of spin reorientation phase transition temperature when xx increasing to over 0.3.

Keywords:

作者及机构信息

1.
上海大学理学院物理系, 上海 200444;

2.
上海大学微结构实验室, 上海 200444

基金项目: 国家自然科学基金(批准号: 50932003, 11274221, 11074163)和上海市教育委员会科技创新基金重点项目(批准号12YZ018, 12ZZ097)资助的课题.

Authors and contacts

1.
Department of Physics, Shanghai University, Shanghai 200444, China;

2.
Laboratory for Microstructures, Shanghai University, Shanghai 200444, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 50932003, 11274221, 11074163) and the Science and Technology Innovation Fund of the Shanghai Education Committee, China (Grant Nos. 12YZ018, 12ZZ097).

参考文献

[1]	Tsymbal L T, Bazaliy Y B, Derkachenko V N, Kamenev V I, Kakazei G N, Palomares F J, Wigen P E 2007 J. Appl. Phys. 101 123919
[2]	Iida R, Satoh T, Shimura T, Kuroda K, Ivanov B A, Tokunaga Y, Tokura Y 2011 Phys. Rev. B 84 064402
[3]	Hur N, Park S, Sharma P A, Ahn J S, Guha S, Cheong S W 2004 Nature 429 392
[4]	Ikeda N, Ohsumi H, Ohwada K, Ishii K, Inami T, Kakurai K, Murakami Y, Yoshii K, Mori S, Horibe Y, Kitô H 2005 Nature 436 1136
[5]	Wang J, Neaton J B, Zheng H, Nagarajan V, Ogale B, Liu B, Viehland D, Vaithyanathan V, Schlom D G, Waghmare U V, Spal-din N A, Rabe K M, Wuttig M, Ramesh R 2003 Science 299 1719
[6]	Cheng Z X, Li A H, Wang X L, Dou S X, Ozawa K, Kimura H, Zhang S J, Shrout T R 2008 J. Appl. Phys. 103 07E507
[7]	Fennie C J 2008 Phys. Rev. Lett. 100 167203
[8]	Tokunaga Y, Iguchi S, Arima T, Tokura Y 2008 Phys. Rev. Lett. 101 097205
[9]	Tokunaga Y, Taguchi Y, Arima T, Tokura Y 2012 Nature Phys. 8 838
[10]	Dzyaloshinskii I 1958 J. Phys. Chem. Solids 4 241
[11]	Moriya T 1960 Phys. Rev. 120 91
[12]	Gorodetsky G, Sharon B, Shtrikman S 1968 J. Appl. Phys. 39 1371
[13]	White R L 1969 J. Appl. Phys. 40 1061
[14]	Song G L, Zhou X H, Su J, Yang H G, Wang T X, Chang F G 2012 Acta Phys. Sin. 61 177501 (in Chinese) [宋桂林, 周晓辉, 苏键, 杨海刚, 王天兴, 常方高 2012 物理学报 61 177501]
[15]	Du Y, Cheng Z X, Wang X L, Dou S X 2010 J. Appl. Phys. 107 09D908
[16]	Guptake H C, Singh M K, Tiwari L M 2002 J. Raman Spectrosc. 33 67
[17]	Venugopalan S, Dutta M, Ramdas A K, Remeika J P 1985 Phys. Rev. B 31 1490
[18]	Traversa E, Nunziante P 2000 J. Am. Ceram. Soc. 85 108792
[19]	Venugopalan S, Becker M M 1990 J. Chem. Phys. 93 15
[20]	Rao G V S, Rao C N R 1970 Appl. Spectrosc. 24 4
[21]	Hong F, Cheng Z X, Zhao H Y, Kimura H, Wang X L 2011 Appl. Phys. Lett. 99 092502

施引文献

[1]	Tsymbal L T, Bazaliy Y B, Derkachenko V N, Kamenev V I, Kakazei G N, Palomares F J, Wigen P E 2007 J. Appl. Phys. 101 123919
[2]	Iida R, Satoh T, Shimura T, Kuroda K, Ivanov B A, Tokunaga Y, Tokura Y 2011 Phys. Rev. B 84 064402
[3]	Hur N, Park S, Sharma P A, Ahn J S, Guha S, Cheong S W 2004 Nature 429 392
[4]	Ikeda N, Ohsumi H, Ohwada K, Ishii K, Inami T, Kakurai K, Murakami Y, Yoshii K, Mori S, Horibe Y, Kitô H 2005 Nature 436 1136
[5]	Wang J, Neaton J B, Zheng H, Nagarajan V, Ogale B, Liu B, Viehland D, Vaithyanathan V, Schlom D G, Waghmare U V, Spal-din N A, Rabe K M, Wuttig M, Ramesh R 2003 Science 299 1719
[6]	Cheng Z X, Li A H, Wang X L, Dou S X, Ozawa K, Kimura H, Zhang S J, Shrout T R 2008 J. Appl. Phys. 103 07E507
[7]	Fennie C J 2008 Phys. Rev. Lett. 100 167203
[8]	Tokunaga Y, Iguchi S, Arima T, Tokura Y 2008 Phys. Rev. Lett. 101 097205
[9]	Tokunaga Y, Taguchi Y, Arima T, Tokura Y 2012 Nature Phys. 8 838
[10]	Dzyaloshinskii I 1958 J. Phys. Chem. Solids 4 241
[11]	Moriya T 1960 Phys. Rev. 120 91
[12]	Gorodetsky G, Sharon B, Shtrikman S 1968 J. Appl. Phys. 39 1371
[13]	White R L 1969 J. Appl. Phys. 40 1061
[14]	Song G L, Zhou X H, Su J, Yang H G, Wang T X, Chang F G 2012 Acta Phys. Sin. 61 177501 (in Chinese) [宋桂林, 周晓辉, 苏键, 杨海刚, 王天兴, 常方高 2012 物理学报 61 177501]
[15]	Du Y, Cheng Z X, Wang X L, Dou S X 2010 J. Appl. Phys. 107 09D908
[16]	Guptake H C, Singh M K, Tiwari L M 2002 J. Raman Spectrosc. 33 67
[17]	Venugopalan S, Dutta M, Ramdas A K, Remeika J P 1985 Phys. Rev. B 31 1490
[18]	Traversa E, Nunziante P 2000 J. Am. Ceram. Soc. 85 108792
[19]	Venugopalan S, Becker M M 1990 J. Chem. Phys. 93 15
[20]	Rao G V S, Rao C N R 1970 Appl. Spectrosc. 24 4
[21]	Hong F, Cheng Z X, Zhao H Y, Kimura H, Wang X L 2011 Appl. Phys. Lett. 99 092502

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