Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88

Abstract Ternary intermetallic compound $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88 has been synthesized in single phase and characterized by x-ray diffraction, scanning electron microscopy with energy dispersive x-ray spectroscopy (SEM-EDX) analysis, magnetizatio...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Mily Kundu, Santanu Pakhira, Renu Choudhary, Durga Paudyal, N. Lakshminarasimhan, Maxim Avdeev, Stephen Cottrell, Devashibhai Adroja, R. Ranganathan, Chandan Mazumdar
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
Materias:
R
Q
Acceso en línea:https://doaj.org/article/2050077dedb44ec1998ad4239310dfd4
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:2050077dedb44ec1998ad4239310dfd4
record_format dspace
spelling oai:doaj.org-article:2050077dedb44ec1998ad4239310dfd42021-12-02T16:07:02ZComplex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.8810.1038/s41598-021-90751-02045-2322https://doaj.org/article/2050077dedb44ec1998ad4239310dfd42021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90751-0https://doaj.org/toc/2045-2322Abstract Ternary intermetallic compound $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88 has been synthesized in single phase and characterized by x-ray diffraction, scanning electron microscopy with energy dispersive x-ray spectroscopy (SEM-EDX) analysis, magnetization, heat capacity, neutron diffraction and muon spin rotation/relaxation ( $$\mu$$ μ SR) measurements. The polycrystalline compound was synthesized in single phase by introducing necessary vacancies in Co/Si sites. Magnetic, heat capacity, and zero-field neutron diffraction studies reveal that the system undergoes magnetic transition below $$\sim$$ ∼ 4 K. Neutron diffraction measurement further reveals that the magnetic ordering is antiferromagnetic in nature with an weak ordered moment. The high temperature magnetic phase has been attributed to glassy in nature consisting of ferromagnetic clusters of itinerant (3d) Co moments as evident by the development of internal field in zero-field $$\mu$$ μ SR below 50 K. The density-functional theory (DFT) calculations suggest that the low temperature magnetic transition is associated with antiferromagnetic coupling between Pr 4f and Co 3d spins. Pr moments show spin fluctuation along with unconventional orbital moment quenching due to crystal field. The evolution of the symmetry and the crystalline electric field environment of Pr-ions are also studied and compared theoretically between the elemental Pr and when it is coupled with other elements such as Co. The localized moment of Pr 4f and itinerant moment of Co 3d compete with each other below $$\sim$$ ∼ 20 K resulting in an unusual temperature dependence of magnetic coercivity in the system.Mily KunduSantanu PakhiraRenu ChoudharyDurga PaudyalN. LakshminarasimhanMaxim AvdeevStephen CottrellDevashibhai AdrojaR. RanganathanChandan MazumdarNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-20 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Mily Kundu
Santanu Pakhira
Renu Choudhary
Durga Paudyal
N. Lakshminarasimhan
Maxim Avdeev
Stephen Cottrell
Devashibhai Adroja
R. Ranganathan
Chandan Mazumdar
Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
description Abstract Ternary intermetallic compound $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88 has been synthesized in single phase and characterized by x-ray diffraction, scanning electron microscopy with energy dispersive x-ray spectroscopy (SEM-EDX) analysis, magnetization, heat capacity, neutron diffraction and muon spin rotation/relaxation ( $$\mu$$ μ SR) measurements. The polycrystalline compound was synthesized in single phase by introducing necessary vacancies in Co/Si sites. Magnetic, heat capacity, and zero-field neutron diffraction studies reveal that the system undergoes magnetic transition below $$\sim$$ ∼ 4 K. Neutron diffraction measurement further reveals that the magnetic ordering is antiferromagnetic in nature with an weak ordered moment. The high temperature magnetic phase has been attributed to glassy in nature consisting of ferromagnetic clusters of itinerant (3d) Co moments as evident by the development of internal field in zero-field $$\mu$$ μ SR below 50 K. The density-functional theory (DFT) calculations suggest that the low temperature magnetic transition is associated with antiferromagnetic coupling between Pr 4f and Co 3d spins. Pr moments show spin fluctuation along with unconventional orbital moment quenching due to crystal field. The evolution of the symmetry and the crystalline electric field environment of Pr-ions are also studied and compared theoretically between the elemental Pr and when it is coupled with other elements such as Co. The localized moment of Pr 4f and itinerant moment of Co 3d compete with each other below $$\sim$$ ∼ 20 K resulting in an unusual temperature dependence of magnetic coercivity in the system.
format article
author Mily Kundu
Santanu Pakhira
Renu Choudhary
Durga Paudyal
N. Lakshminarasimhan
Maxim Avdeev
Stephen Cottrell
Devashibhai Adroja
R. Ranganathan
Chandan Mazumdar
author_facet Mily Kundu
Santanu Pakhira
Renu Choudhary
Durga Paudyal
N. Lakshminarasimhan
Maxim Avdeev
Stephen Cottrell
Devashibhai Adroja
R. Ranganathan
Chandan Mazumdar
author_sort Mily Kundu
title Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
title_short Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
title_full Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
title_fullStr Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
title_full_unstemmed Complex magnetic properties associated with competing local and itinerant magnetism in $${\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}$$ Pr 2 Co 0.86 Si 2.88
title_sort complex magnetic properties associated with competing local and itinerant magnetism in $${\text {pr}}_2 {\text {co}}_{0.86} {\text {si}}_{2.88}$$ pr 2 co 0.86 si 2.88
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/2050077dedb44ec1998ad4239310dfd4
work_keys_str_mv AT milykundu complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT santanupakhira complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT renuchoudhary complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT durgapaudyal complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT nlakshminarasimhan complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT maximavdeev complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT stephencottrell complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT devashibhaiadroja complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT rranganathan complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
AT chandanmazumdar complexmagneticpropertiesassociatedwithcompetinglocalanditinerantmagnetismintextpr2textco086textsi288pr2co086si288
_version_ 1718384764871770112