Document Details

Document Type : Article In Journal 
Document Title :
Study of the physical properties of La2-xErxTi2O7 (0 <= x <= 0.075) compounds
Study of the physical properties of La2-xErxTi2O7 (0 <= x <= 0.075) compounds
 
Subject : physics 
Document Language : English 
Abstract : New complex magnetic frustrated materials La2-xErxTi2O7 (0 <= x <= 0.075) have been synthesized by solid-solid method. The crystallographic and magnetic properties were studied as a function of substitution of the La3+ ion by the Er3+ one. All samples are found to be single phase and crystallize in the monoclinic structure with P-21 space group. Magnetic measurements have revealed the presence of dominant antiferromagnetic interactions and the absence of magnetic ordering until a temperature of 2 K. The magnetic study suggests that the Curie-Weiss temperature (theta(CW)) is negative, as expected in the frustrated lanthanide sublattice in the Ln(2-x)Ln'xM2O7 structure. From the frustration index integral = theta CW/T-N, we have deduced the presence of a strong frustration phenomenon. The critical properties of the antiferromagnetic behavior, for x = 0.025, 0.05 and 0.075 samples, have been investigated. It was found that the 2D-self-avoiding walk (SAW) model is the best one to describe the critical phenomena. 
ISSN : 1286-0042 
Journal Name : EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS 
Volume : 59 
Issue Number : 1 
Publishing Year : 1433 AH
2012 AD 
Article Type : Article 
Added Date : Monday, July 24, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
N Ben AmorBen Amor, N InvestigatorDoctorate 
M BejarBejar, M ResearcherDoctorate 
D Dhahri,Dhahri,, D ResearcherDoctorate 
M Bekri,Bekri,, M ResearcherDoctorate 
M. A ValenteValente, M. A ResearcherDoctorate 
E.K HlilHlil, E.K ResearcherDoctorate 

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