Chin. Phys. Lett.  2005, Vol. 22 Issue (6): 1511-1514    DOI:
Original Articles |
Origin of the Downturn in Inverse Susceptibility Observed above the Curie Temperature in Perovskite Manganites
YUAN Song-Liu;CHEN Wei; ZHAO Li-Feng;DOYANANDA Debnath;MIAO Ju-Hong;WANG Yong-Qiang;YUAN Li;SHANG Jing-Lin;XIAO Li-Xia;CAO Heng;XIA Zheng-Cai
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Cite this article:   
YUAN Song-Liu, CHEN Wei, ZHAO Li-Feng et al  2005 Chin. Phys. Lett. 22 1511-1514
Download: PDF(228KB)  
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract The measurement of low-field susceptibility X as a function of temperature T for La2/3Ca1/3MnO3 shows a significant downturn in 1/X (T) above the Curie temperature TC, a behaviour generally observed in perovskite manganites. Such a downturn is argued to be due to the segregation of ferromagnetic clusters with larger spins in the paramagnetic matrix. Based on this consideration, a phenomenological expression for X(T) is proposed, in which the total susceptibility is assumed to be a sum of two susceptibilities arising from magnetic entities in the PM background and the FM clusters with T-dependent effective spins, respectively. The result is in good agreement with the experimental data obtained in La2/3Ca1/3MnO3.
Keywords: 75.47.Gk      76.30.-v      75.30.Kz     
Published: 01 June 2005
PACS:  75.47.Gk (Colossal magnetoresistance)  
  76.30.-v (Electron paramagnetic resonance and relaxation)  
  75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))  
TRENDMD:   
URL:  
https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I6/01511
Service
E-mail this article
E-mail Alert
RSS
Articles by authors
YUAN Song-Liu
CHEN Wei
ZHAO Li-Feng
DOYANANDA Debnath
MIAO Ju-Hong
WANG Yong-Qiang
YUAN Li
SHANG Jing-Lin
XIAO Li-Xia
CAO Heng
XIA Zheng-Cai
Related articles from Frontiers Journals
[1] Indrajeet Mishra, Ram Kripal, Sanjay Misra. Electron Paramagnetic Resonance of Mn2+-Doped Cadmium Formate Dihydrate Single Crystals[J]. Chin. Phys. Lett., 2012, 29(3): 1511-1514
[2] WANG Hong-Tao, ZHOU Tong, HONG Bo, TAO Qian, XU Zhu-An** . Magnetic Properties of Orthorhombic Perovskite Ho1−xLaxMnO3[J]. Chin. Phys. Lett., 2011, 28(2): 1511-1514
[3] WANG Xue-Li, WANG Chuan-Hui, TIAN Zhao-Ming, YIN Shi-Yan, YUAN Song-Liu . First-Principles Based Model of Spin-state Phase Transition[J]. Chin. Phys. Lett., 2010, 27(10): 1511-1514
[4] Prashant Dwivedi, Ram Kripal, Santwana Shukla. Electron Paramagnetic Resonance and Optical Absorption of VO2+ Doped Bis (glycinato) Mg (II) Monohydrate Single Crystals[J]. Chin. Phys. Lett., 2010, 27(1): 1511-1514
[5] LIU Yong-Sheng, ZHONG Yun-Bo, ZHANG Jin-Cang, GU Min-An, YANG Zheng-Long, REN Zhong-Ming. Crystalline and Magnetic Enhancement of Nanocrystalline MnZn Ferrites Fabricated under a High Magnetic Field[J]. Chin. Phys. Lett., 2009, 26(8): 1511-1514
[6] Ram Kripal, Santwana Shukla. C4v Symmetry Crystal Field and Ground State Wavefunction of the VO2+ Ion[J]. Chin. Phys. Lett., 2009, 26(8): 1511-1514
[7] ZHUANG Bin, XU Yan, LAI Heng, HUANG Zhi-Gao, CHEN Shui-Yuan, LIN Ying-Bin, LI Shang-Dong, LAI Fa-Chun. Enhanced Magnetoresistance of (La0.67Ca0.33MnO3) Composites Coated byZn0.95Co0.05O[J]. Chin. Phys. Lett., 2009, 26(5): 1511-1514
[8] G. G. Fedoruk, O. N. Poklonskaya. On Room-Temperature Inversion of EPR Signals of P1 Centre in Synthetic Diamond[J]. Chin. Phys. Lett., 2009, 26(1): 1511-1514
[9] MYDEEN Kamal, YU Yong, JIN Chang-Qing. Development of Simple Dip-Stick-Type Uniaxial Stress Actuator for Alternating-Current Susceptibility Measurements[J]. Chin. Phys. Lett., 2008, 25(9): 1511-1514
[10] ZHENG Ping, LUO Jian-Lin, WU Dong, SU Shao-Kui, LIU Guang-Tong, MAYong-Chang, CHEN Zhao-Jia. Anisotropic Applied Field Dependency of Two Successive Magnetic Transitions in LiCu2O2[J]. Chin. Phys. Lett., 2008, 25(9): 1511-1514
[11] LIU Li-Feng, KANG Jin-Feng, WANG Yi, ZHANG Xing, HAN Ru-Qi. Vacuum Annealing Induced Room-Temperature Ferromagnetism in Co0.1Ti0.9O2-δ Films Prepared by Sol-Gel Method[J]. Chin. Phys. Lett., 2008, 25(7): 1511-1514
[12] LIU Wen-Jun, SHU Qi-Qing, S. M. BHAGAT, I. O. TROYANCHUK. Ferromagnetic Antiresonance and Giant Microwave Magneto-Impedance in Polycrystalline La0.49Sr0.51MnO3[J]. Chin. Phys. Lett., 2008, 25(3): 1511-1514
[13] N. A. Poklonski, N. M. Lapchuk, A. V. Khomich, LU Fan-Xiu, TANG Wei-Zhong, V. G. Ralchenko, I. I. Vlasov, M. V. Chukichev, Sambuu Munkhtsetseg,. Nitrogen-Doped Chemical Vapour Deposited Diamond: a New Material for Room-Temperature Solid State Maser[J]. Chin. Phys. Lett., 2007, 24(7): 1511-1514
[14] ZHANG Wang, YAO Li-De, YOU Shu-Jie, YANG Liu-Xiang, YANG Hua, LI Feng-Ying, CHEN Liang-Chen, BAO Zhong-Xing, LI Xiao-Dong, LIU Jing, JIN Chang-Qing, YU Ri-Cheng. Structural Stability of CaCuMn6O12 under High Pressure and Low Temperature[J]. Chin. Phys. Lett., 2007, 24(2): 1511-1514
[15] Kheamrutai Thamaphat, Pichet Limsuwan, Siwaporn Meejoo. ESR Spectrometer as a Possible Tool for Rapid Analysis of Cane Sugar Purity[J]. Chin. Phys. Lett., 2007, 24(12): 1511-1514
Viewed
Full text


Abstract