Structural, Magnetic, Magnetocaloric, and Magnetostrictive Properties of Pb1-xSrxMnBO4(x = 0, 0.5, and 1.0)

Jake Head; Pascal Manuel; Fabio Orlandi; Minki Jeong; Martin R. Lees; Rukang Li; Colin Greaves

doi:10.1021/acs.chemmater.0c03701

Structural, Magnetic, Magnetocaloric, and Magnetostrictive Properties of Pb_1-xSr_xMnBO₄(x = 0, 0.5, and 1.0)

Jake Head, Pascal Manuel, Fabio Orlandi, Minki Jeong, Martin R. Lees, Rukang Li, Colin Greaves^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

213 Downloads (Pure)

Abstract

The solid solution Pb1-xSrxMnBO4 is reported with an orthorhombic, Pnma, structure throughout; here studies on compounds with x = 0, 0.5, and 1 are described. The structure contains chains of MnO6 octahedra that exhibit intra-chain ferromagnetic (FM) order at low temperatures. Neutron powder diffraction (NPD) reveals a dominant FM order in PbMnBO4 (Tc = 30 K), whereas SrMnBO4 is primarily antiferromagnetic (AFM) with TN = 16 K; the difference is related to the link between the chains that involves the BO3 groups. PbMnBO4 has its moment along a but also has a previously unreported AFM contribution along c (magnetic space group Pnm′a′), whereas SrMnBO4 has its moment along a but also a FM canting along c (magnetic space group Pn′m′a). The end members show distinct magnetostriction at Tc/TN which correlates with the different magnetic exchange in these compounds. NPD in variable applied magnetic field shows that SrMnBO4 is converted to fully FM at 8 T. The behavior above the magnetic ordering temperature is consistent with short-range FM correlations within the chains, which is particularly apparent in PbMnBO4. The magnetocaloric effect (MCE) has been measured and compared with those previously reported for the mineral gaudefroyite. PbMnBO4 has excellent MCE behavior, especially near Tc, 30 K. The strong FM exchange within the chains and FM correlations above Tc are vital for the MC properties.

Original language	English
Pages (from-to)	10184-10199
Number of pages	16
Journal	Chemistry of Materials
Volume	32
Issue number	23
Early online date	17 Nov 2020
DOIs	https://doi.org/10.1021/acs.chemmater.0c03701
Publication status	Published - 8 Dec 2020

Bibliographical note

Funding Information:
The present work was supported by the National Natural Science Foundation of China (No. 51772304), EPSRC (2285028), and the University of Birmingham (Birmingham Fellowship). The authors acknowledge the Science and Technology Facilities Council (STFC) for the provision of neutron beam facilities. Neutron diffraction data analysed in this report can be obtained at 10.5286/ISIS.E.RB1920247.

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

Access to Document

10.1021/acs.chemmater.0c03701Licence: Creative Commons: Attribution (CC BY)

Head_et_al_2020_Structural_magnetic_magnetocaloric_and_magnetostrictive_Chemistry_of_MaterialsFinal published version, 6.11 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{cc562b1fb6924291bff15c822ed2348f,

title = "Structural, Magnetic, Magnetocaloric, and Magnetostrictive Properties of Pb1-xSrxMnBO4(x = 0, 0.5, and 1.0)",

abstract = "The solid solution Pb1-xSrxMnBO4 is reported with an orthorhombic, Pnma, structure throughout; here studies on compounds with x = 0, 0.5, and 1 are described. The structure contains chains of MnO6 octahedra that exhibit intra-chain ferromagnetic (FM) order at low temperatures. Neutron powder diffraction (NPD) reveals a dominant FM order in PbMnBO4 (Tc = 30 K), whereas SrMnBO4 is primarily antiferromagnetic (AFM) with TN = 16 K; the difference is related to the link between the chains that involves the BO3 groups. PbMnBO4 has its moment along a but also has a previously unreported AFM contribution along c (magnetic space group Pnm′a′), whereas SrMnBO4 has its moment along a but also a FM canting along c (magnetic space group Pn′m′a). The end members show distinct magnetostriction at Tc/TN which correlates with the different magnetic exchange in these compounds. NPD in variable applied magnetic field shows that SrMnBO4 is converted to fully FM at 8 T. The behavior above the magnetic ordering temperature is consistent with short-range FM correlations within the chains, which is particularly apparent in PbMnBO4. The magnetocaloric effect (MCE) has been measured and compared with those previously reported for the mineral gaudefroyite. PbMnBO4 has excellent MCE behavior, especially near Tc, 30 K. The strong FM exchange within the chains and FM correlations above Tc are vital for the MC properties. ",

author = "Jake Head and Pascal Manuel and Fabio Orlandi and Minki Jeong and Lees, {Martin R.} and Rukang Li and Colin Greaves",

note = "Funding Information: The present work was supported by the National Natural Science Foundation of China (No. 51772304), EPSRC (2285028), and the University of Birmingham (Birmingham Fellowship). The authors acknowledge the Science and Technology Facilities Council (STFC) for the provision of neutron beam facilities. Neutron diffraction data analysed in this report can be obtained at 10.5286/ISIS.E.RB1920247.",

year = "2020",

month = dec,

day = "8",

doi = "10.1021/acs.chemmater.0c03701",

language = "English",

volume = "32",

pages = "10184--10199",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - Structural, Magnetic, Magnetocaloric, and Magnetostrictive Properties of Pb1-xSrxMnBO4(x = 0, 0.5, and 1.0)

AU - Head, Jake

AU - Manuel, Pascal

AU - Orlandi, Fabio

AU - Jeong, Minki

AU - Lees, Martin R.

AU - Li, Rukang

AU - Greaves, Colin

N1 - Funding Information: The present work was supported by the National Natural Science Foundation of China (No. 51772304), EPSRC (2285028), and the University of Birmingham (Birmingham Fellowship). The authors acknowledge the Science and Technology Facilities Council (STFC) for the provision of neutron beam facilities. Neutron diffraction data analysed in this report can be obtained at 10.5286/ISIS.E.RB1920247.

PY - 2020/12/8

Y1 - 2020/12/8

N2 - The solid solution Pb1-xSrxMnBO4 is reported with an orthorhombic, Pnma, structure throughout; here studies on compounds with x = 0, 0.5, and 1 are described. The structure contains chains of MnO6 octahedra that exhibit intra-chain ferromagnetic (FM) order at low temperatures. Neutron powder diffraction (NPD) reveals a dominant FM order in PbMnBO4 (Tc = 30 K), whereas SrMnBO4 is primarily antiferromagnetic (AFM) with TN = 16 K; the difference is related to the link between the chains that involves the BO3 groups. PbMnBO4 has its moment along a but also has a previously unreported AFM contribution along c (magnetic space group Pnm′a′), whereas SrMnBO4 has its moment along a but also a FM canting along c (magnetic space group Pn′m′a). The end members show distinct magnetostriction at Tc/TN which correlates with the different magnetic exchange in these compounds. NPD in variable applied magnetic field shows that SrMnBO4 is converted to fully FM at 8 T. The behavior above the magnetic ordering temperature is consistent with short-range FM correlations within the chains, which is particularly apparent in PbMnBO4. The magnetocaloric effect (MCE) has been measured and compared with those previously reported for the mineral gaudefroyite. PbMnBO4 has excellent MCE behavior, especially near Tc, 30 K. The strong FM exchange within the chains and FM correlations above Tc are vital for the MC properties.

AB - The solid solution Pb1-xSrxMnBO4 is reported with an orthorhombic, Pnma, structure throughout; here studies on compounds with x = 0, 0.5, and 1 are described. The structure contains chains of MnO6 octahedra that exhibit intra-chain ferromagnetic (FM) order at low temperatures. Neutron powder diffraction (NPD) reveals a dominant FM order in PbMnBO4 (Tc = 30 K), whereas SrMnBO4 is primarily antiferromagnetic (AFM) with TN = 16 K; the difference is related to the link between the chains that involves the BO3 groups. PbMnBO4 has its moment along a but also has a previously unreported AFM contribution along c (magnetic space group Pnm′a′), whereas SrMnBO4 has its moment along a but also a FM canting along c (magnetic space group Pn′m′a). The end members show distinct magnetostriction at Tc/TN which correlates with the different magnetic exchange in these compounds. NPD in variable applied magnetic field shows that SrMnBO4 is converted to fully FM at 8 T. The behavior above the magnetic ordering temperature is consistent with short-range FM correlations within the chains, which is particularly apparent in PbMnBO4. The magnetocaloric effect (MCE) has been measured and compared with those previously reported for the mineral gaudefroyite. PbMnBO4 has excellent MCE behavior, especially near Tc, 30 K. The strong FM exchange within the chains and FM correlations above Tc are vital for the MC properties.

UR - http://www.scopus.com/inward/record.url?scp=85096569320&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.0c03701

DO - 10.1021/acs.chemmater.0c03701

M3 - Article

AN - SCOPUS:85096569320

SN - 0897-4756

VL - 32

SP - 10184

EP - 10199

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 23

ER -