Magnetic and structural changes in LaCo0.9Mn0.1O3 at high pressure

M. Capone; C. J. Ridley; N. P. Funnell; G. B. G. Stenning; J. S. Loveday; M. Guthrie; C. L. Bull

doi:10.1088/1361-648X/aaa042

Magnetic and structural changes in LaCo0.9Mn0.1O3 at high pressure

M. Capone, C. J. Ridley, N. P. Funnell, G. B. G. Stenning, J. S. Loveday, M. Guthrie, C. L. Bull^*

^*Corresponding author for this work

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

Abstract

The structural and magnetic properties of LaCo0.9Mn0.1O3 have been studied as a function of pressure by neutron powder diffraction and DC magnetometry. The material is confirmed to exhibit rhombohedral R (3) over barc symmetry between ambient pressure and 6 GPa. We have determined the bulk modulus B-0 of the sample using a second-order Birch-Murnaghan equation of state which yielded: B-0 = 140(9) GPa and V-0 = 112.7(2) angstrom(3). We report a non-linear increase of the Curie temperature T-C from an ambient pressure value of 224.7 K to similar to 236 K at a pressure of 4 GPa. Finally, we confirm the glassy-like nature of the magnetism in LaCo0.9Mn0.1O3, which is maintained throughout the pressure range explored.

Original language	English
Article number	035402
Number of pages	7
Journal	Journal of Physics: Condensed Matter
Volume	30
Issue number	3
DOIs	https://doi.org/10.1088/1361-648X/aaa042
Publication status	Published - 21 Dec 2017

Keywords / Materials (for Non-textual outputs)

high-pressure
magnetism
neutron-diffraction
perovskite
PEROVSKITES
LACOO3
NEUTRON
CRYSTAL
DIFFRACTION
TRANSITION
SYMMETRY
BATIO3

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title = "Magnetic and structural changes in LaCo0.9Mn0.1O3 at high pressure",

abstract = "The structural and magnetic properties of LaCo0.9Mn0.1O3 have been studied as a function of pressure by neutron powder diffraction and DC magnetometry. The material is confirmed to exhibit rhombohedral R (3) over barc symmetry between ambient pressure and 6 GPa. We have determined the bulk modulus B-0 of the sample using a second-order Birch-Murnaghan equation of state which yielded: B-0 = 140(9) GPa and V-0 = 112.7(2) angstrom(3). We report a non-linear increase of the Curie temperature T-C from an ambient pressure value of 224.7 K to similar to 236 K at a pressure of 4 GPa. Finally, we confirm the glassy-like nature of the magnetism in LaCo0.9Mn0.1O3, which is maintained throughout the pressure range explored.",

keywords = "high-pressure, magnetism, neutron-diffraction, perovskite, PEROVSKITES, LACOO3, NEUTRON, CRYSTAL, DIFFRACTION, TRANSITION, SYMMETRY, BATIO3",

author = "M. Capone and Ridley, {C. J.} and Funnell, {N. P.} and Stenning, {G. B. G.} and Loveday, {J. S.} and M. Guthrie and Bull, {C. L.}",

year = "2017",

month = dec,

day = "21",

doi = "10.1088/1361-648X/aaa042",

language = "English",

volume = "30",

journal = "Journal of Physics: Condensed Matter",

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TY - JOUR

T1 - Magnetic and structural changes in LaCo0.9Mn0.1O3 at high pressure

AU - Capone, M.

AU - Ridley, C. J.

AU - Funnell, N. P.

AU - Stenning, G. B. G.

AU - Loveday, J. S.

AU - Guthrie, M.

AU - Bull, C. L.

PY - 2017/12/21

Y1 - 2017/12/21

N2 - The structural and magnetic properties of LaCo0.9Mn0.1O3 have been studied as a function of pressure by neutron powder diffraction and DC magnetometry. The material is confirmed to exhibit rhombohedral R (3) over barc symmetry between ambient pressure and 6 GPa. We have determined the bulk modulus B-0 of the sample using a second-order Birch-Murnaghan equation of state which yielded: B-0 = 140(9) GPa and V-0 = 112.7(2) angstrom(3). We report a non-linear increase of the Curie temperature T-C from an ambient pressure value of 224.7 K to similar to 236 K at a pressure of 4 GPa. Finally, we confirm the glassy-like nature of the magnetism in LaCo0.9Mn0.1O3, which is maintained throughout the pressure range explored.

AB - The structural and magnetic properties of LaCo0.9Mn0.1O3 have been studied as a function of pressure by neutron powder diffraction and DC magnetometry. The material is confirmed to exhibit rhombohedral R (3) over barc symmetry between ambient pressure and 6 GPa. We have determined the bulk modulus B-0 of the sample using a second-order Birch-Murnaghan equation of state which yielded: B-0 = 140(9) GPa and V-0 = 112.7(2) angstrom(3). We report a non-linear increase of the Curie temperature T-C from an ambient pressure value of 224.7 K to similar to 236 K at a pressure of 4 GPa. Finally, we confirm the glassy-like nature of the magnetism in LaCo0.9Mn0.1O3, which is maintained throughout the pressure range explored.

KW - high-pressure

KW - magnetism

KW - neutron-diffraction

KW - perovskite

KW - PEROVSKITES

KW - LACOO3

KW - NEUTRON

KW - CRYSTAL

KW - DIFFRACTION

KW - TRANSITION

KW - SYMMETRY

KW - BATIO3

U2 - 10.1088/1361-648X/aaa042

DO - 10.1088/1361-648X/aaa042

M3 - Article

SN - 0953-8984

VL - 30

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

IS - 3

M1 - 035402

ER -

Magnetic and structural changes in LaCo0.9Mn0.1O3 at high pressure

Abstract

Keywords / Materials (for Non-textual outputs)

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