Structure and magnetic properties of monovalent doping charge ordering perovskite
Author
Source
Journal of New Technology and Materials
Issue
Vol. 8, Issue 1 (30 Jun. 2018), pp.42-47, 6 p.
Publisher
Larbi Ben M'hidi Oum el-Bouaghi University
Publication Date
2018-06-30
Country of Publication
Algeria
No. of Pages
6
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
The present paper reports detailed structural, magnetic and magnetocaloric characterizations of the charge ordered Nd0.5Ca0.4M0.1MnO3 (M=Na, K : NCNMO and NCKMO) polycrystalline samples.
Our compounds were synthesized using the solid state reaction at high temperature.
Both samples are single phase and crystallize in the orthorhombic structure with Pnma space group.
NCNMO ( ?? = 1.1775 Å) undergoes a charge disordering transition (CO) associated to the paramagnetic (PM)-antiferromagnetic (AFM) phase transition at T < 250 K.
The long range AFM ordering seems to from at 35 K, rather than 150 K as previously reported.
In the intermediate temperature range, charge ordering occurs while orbital ordering sets in progressively, with no magnetic order.
For NCKMO sample ( ?? = 1.2085 Å), K doping induces the melting of the CO state and the presence of the short-range AFM phase, which is metastable and transforms into the stable ferromagnetic (FM) state.
Magnetic characterization shows the signature of AFM-FM ordering and spin-glass coexisting at low temperature.
The temperature dependence of magnetic entropy change at high magnetic field values presents some anomalies attributed to the metamagnetic transition, which is of first order.
American Psychological Association (APA)
Tarabulsi, H.. 2018. Structure and magnetic properties of monovalent doping charge ordering perovskite. Journal of New Technology and Materials،Vol. 8, no. 1, pp.42-47.
https://search.emarefa.net/detail/BIM-833878
Modern Language Association (MLA)
Tarabulsi, H.. Structure and magnetic properties of monovalent doping charge ordering perovskite. Journal of New Technology and Materials Vol. 8, no. 1 (2018), pp.42-47.
https://search.emarefa.net/detail/BIM-833878
American Medical Association (AMA)
Tarabulsi, H.. Structure and magnetic properties of monovalent doping charge ordering perovskite. Journal of New Technology and Materials. 2018. Vol. 8, no. 1, pp.42-47.
https://search.emarefa.net/detail/BIM-833878
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 46-47
Record ID
BIM-833878