Structural, electrical and magnetic features of Kagomé YBaCo4O7 system

Bhat, M. A.; Zargar, R. A.; Modi, A.; Arora, M.; Gaur, N. K.

doi:10.1515/msp-2016-0122

Artykuł - szczegóły

Tytuł artykułu

Structural, electrical and magnetic features of Kagomé YBaCo4O7 system

Autorzy

Bhat M. A. , Zargar R. A. , Modi A. , Arora M. , Gaur N. K.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1515/msp-2016-0122

Warianty tytułu

Języki publikacji

Abstrakty

Polycrystalline yttrium barium cobaltite (YBaCo₄O₇) powdered sample was prepared by conventional solid state reaction route using high purity yttrium oxide, barium carbonate and cobalt oxide. The as-prepared sample was characterized by XRD diffraction, SEM/EDAX, Raman analytical techniques, resistivity and magnetization measurements for structural, morphological, electrical and magnetic properties assessment. XRD pattern confirms the single phase formation of the sample without any impurity. SEM image shows the hexagonal growth of the crystal and EDAX spectrum reveals stoichiometric composition of as prepared sample. The variation in electrical resistivity from 90 K to 300 K follows the variable range hopping conductivity mechanism. The strong broad overlapped Raman peaks of Co–O and Y–O stretching and bending vibrations of tetrahedral CoO₄ with included components of YO₆ of octahedral symmetry are obtained at 542 cm^-1, 486 cm^-1 and 636 cm^-1, 436 cm^-1, respectively. DC magnetic susceptibility exhibits very weak ferromagnetism below 80 K and does not obey Curie-Weiss law.

Słowa kluczowe

scanning electron microscopy (SEM) XRD analysis DC magnetic susceptibility

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2016

Tom

Vol. 34, No. 4

Strony

786--793

Opis fizyczny

Bibliogr. 33 poz., rys., tab.

Twórcy

autor

Bhat M. A.

Department of Physics, Barkatullah University, Bhopal 462026, India

autor

Zargar R. A.

Department of Physics, Jamia Millia Islamia, New Delhi 110025, India

autor

Modi A.

Department of Physics, Barkatullah University, Bhopal 462026, India

autor

Arora M.

CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India

autor

Gaur N. K.

Department of Physics, Barkatullah University, Bhopal 462026, India

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-6a1ca066-8458-4233-b383-d1c412e1c802