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Ferrimagnetism and abnormal spin–lattice coupling in dilute magnetic ferroelectric (Bi0.46Na0.46Ba0.08)TiO3:Co |
Fan Jing(范婧)a)b), Dong Xin-Wei(董新伟) a)b), Song You(宋友)a), Wang Ke-Feng(王克锋)a)b), Liu Jun-Ming(刘俊明) a)b)†, and Jiang Xiang-Ping(江向平)c) |
a Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China; b International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China; c Department of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China |
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Abstract We have investigated the low-temperature magnetism and spin–lattice coupling in (Bi0.46Na0.46Ba0.08)TiO3:Co in order to understand the magnetoelectric effect in such artificially synthesized dilute magnetic ferroelectrics. It is revealed that the as-prepared (Bi0.46Na0.46Ba0.08)TiO3:Co at Co content of 20%~30% exhibits fascinating ferrimagnetism which is robust against magnetic field, the abnormal spin–lattice coupling characterized by a negative magnetostriction effect; and the suppressed magnetic moment within the temperature range of 30 K~50 K is identified. These magnetic behaviours at low temperatures can be explained by the competition between the ferrimagnetic response and the magnetic moment suppression induced by the abnormal spin–lattice coupling effect. Finally, the ferroelectric and magnetodielectric properties are also discussed.
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Received: 29 December 2009
Revised: 18 June 2010
Accepted manuscript online:
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PACS:
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75.50.Gg
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(Ferrimagnetics)
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75.30.Wx
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(Spin crossover)
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75.80.+q
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(Magnetomechanical effects, magnetostriction)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50832002 and 10874075), the National Basic Research Program of China (Grant Nos. 2009CB613303 and 2009CB929501), and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2008024). |
Cite this article:
Fan Jing(范婧), Dong Xin-Wei(董新伟), Song You(宋友), Wang Ke-Feng(王克锋), Liu Jun-Ming(刘俊明), and Jiang Xiang-Ping(江向平) Ferrimagnetism and abnormal spin–lattice coupling in dilute magnetic ferroelectric (Bi0.46Na0.46Ba0.08)TiO3:Co 2011 Chin. Phys. B 20 027502
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