DocumentCode :
3539625
Title :
Fine-tuning of magnetoresistance in Nd0.5(Ca,Sr)0.5MnO3 system
Author :
Cheng, S.L. ; Chou, Y.J. ; Lin, J.G.
Author_Institution :
Center for Condensed Matter & Sci., Nat. Taiwan Univ., Taipei, Taiwan
fYear :
2005
fDate :
4-8 April 2005
Firstpage :
1887
Lastpage :
1888
Abstract :
In this work, ionic size or the radius of A-site cation A> was utilized for the fine-tuning of the magnetoresistance (MR) of Nd0.5Ca0.5-ySryMnO3. The values of A> were set to be from 1.182 Å to 1.20 Å. The highest MR ratio was obtained to be ∼ 800% at 50 K in the samples with y = 0.08. Furthermore, the "spin valve" like behavior was observed at 100 K at the same sample, which may have originated from the melting of charge ordering.
Keywords :
antiferromagnetic materials; calcium compounds; colossal magnetoresistance; ferromagnetic materials; neodymium compounds; strontium compounds; 0 to 7 T; 10 to 300 K; A-site cation radius; Nd0.5Ca0.5-ySryMnO3; charge ordering melting; ionic size; magnetoresistance fine-tuning; spin valve; Antiferromagnetic materials; Colossal magnetoresistance; Conductivity; Doping; Insulation; Magnetic field measurement; Magnetization; Neodymium; Phase measurement; Temperature;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
Type :
conf
DOI :
10.1109/INTMAG.2005.1464377
Filename :
1464377
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3539625
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