Document Detail

Enhanced Negative Thermal Expansion in La1-xPrxFe10.7Co0.8Si1.5 Compounds by Doping the Magnetic Rare-Earth Element Praseodymium.
MedLine Citation:
PMID:  24848739     Owner:  NLM     Status:  Publisher    
Experiments have been performed to enhance negative thermal expansion (NTE) in the La(Fe,Co,Si)13-based compounds by optimizing the chemical composition, i.e., proper substitution of La by magnetic element Pr. It is found that increasing the absolute value of the average coefficient of thermal expansion (CTE) in the NTE temperature region (200-300 K) attributes to enhancement of the spontaneous magnetization and its growth rate with increasing Pr content. Typically, the average CTE of La1-xPrxFe10.7Co0.8Si1.5 with x = 0.5 reaches as large as -38.5 × 10(-6) K(-1) between 200 and 300 K (ΔT = 100 K), which is 18.5% larger than that of x = 0. The present results highlight the potential applications of La(Fe,Co,Si)13-based compounds with a larger NTE coefficient.
Wen Li; Rongjin Huang; Wei Wang; Jie Tan; Yuqiang Zhao; Shaopeng Li; Chuanjun Huang; Jun Shen; Laifeng Li
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-5-21
Journal Detail:
Title:  Inorganic chemistry     Volume:  -     ISSN:  1520-510X     ISO Abbreviation:  Inorg Chem     Publication Date:  2014 May 
Date Detail:
Created Date:  2014-5-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0366543     Medline TA:  Inorg Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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