Pressure effect on the magnetic phase diagram of La1.4Sr1.6Mn2O7

K V  Kamenev; M R  Lees; G  Balakrishnan; D M K  Paul; G J  Mcintyre; Z  Arnold

Pressure effect on the magnetic phase diagram of La_1.4Sr_1.6Mn₂O₇

K V Kamenev, M R Lees, G Balakrishnan, D M K Paul, G J Mcintyre, Z Arnold

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Magnetic pressure-temperature phase diagram of La1.4Sr1.6Mn2O7 layered manganite has been studied using magnetization measurements and neutron diffraction an single crystals. It has been found that La1.4Sr1.6Mn2O7 is a quasi two-dimensional ferromagnet at temperatures as high as 340 K. At lower temperatures it undergoes a series of phase transitions into magnetic phases with three-dimensional long-range order. At 90 K La1.4Sr1.6Mn2O7 becomes an antiferromagnet and at 65 K it undergoes a transition into a ferromagnetic phase. It has also been shown that applied pressure enhances the long-range antiferromagnetic correlations between Mn2O9 bilayers. These findings have been explained in terms of numerical calculations, taking into account pressure-induced electron transfer between 3d orbitals of the Mn ions.

Original language	English
Title of host publication	FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS
Editors	HD Hochheimer, B Kuchta, PK Dorhout, JL Yarger
Place of Publication	DORDRECHT
Publisher	Springer
Pages	451-461
Number of pages	11
ISBN (Print)	1-4020-0159-2
Publication status	Published - 2001
Event	Conference of the NATO Advanced Research Workshop on Frontiers of High Pressure Reseach II - Application of High Pressure to Low-Dimensional Novel Electronic Materials - PRINGREE PK Duration: 10 Jun 2001 → 15 Jun 2001

Conference

Conference	Conference of the NATO Advanced Research Workshop on Frontiers of High Pressure Reseach II - Application of High Pressure to Low-Dimensional Novel Electronic Materials
City	PRINGREE PK
Period	10/06/01 → 15/06/01

Keywords / Materials (for Non-textual outputs)

magnetism
high pressure
layered manganites
colossal magnetoresistance
LAYERED PEROVSKITE STRUCTURE
MANGANITE LA2-2XSR1+2XMN2O7
MAGNETORESISTANCE
CRYSTAL

Cite this

Kamenev, K. V., Lees, M. R., Balakrishnan, G., Paul, D. M. K., Mcintyre, G. J., & Arnold, Z. (2001). Pressure effect on the magnetic phase diagram of La_1.4Sr_1.6Mn₂O₇. In HD. Hochheimer, B. Kuchta, PK. Dorhout, & JL. Yarger (Eds.), FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS (pp. 451-461). Springer.

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title = "Pressure effect on the magnetic phase diagram of La1.4Sr1.6Mn2O7",

abstract = "Magnetic pressure-temperature phase diagram of La1.4Sr1.6Mn2O7 layered manganite has been studied using magnetization measurements and neutron diffraction an single crystals. It has been found that La1.4Sr1.6Mn2O7 is a quasi two-dimensional ferromagnet at temperatures as high as 340 K. At lower temperatures it undergoes a series of phase transitions into magnetic phases with three-dimensional long-range order. At 90 K La1.4Sr1.6Mn2O7 becomes an antiferromagnet and at 65 K it undergoes a transition into a ferromagnetic phase. It has also been shown that applied pressure enhances the long-range antiferromagnetic correlations between Mn2O9 bilayers. These findings have been explained in terms of numerical calculations, taking into account pressure-induced electron transfer between 3d orbitals of the Mn ions.",

keywords = "magnetism, high pressure, layered manganites, colossal magnetoresistance, LAYERED PEROVSKITE STRUCTURE, MANGANITE LA2-2XSR1+2XMN2O7, MAGNETORESISTANCE, CRYSTAL",

author = "Kamenev, {K V} and Lees, {M R} and G Balakrishnan and Paul, {D M K} and Mcintyre, {G J} and Z Arnold",

year = "2001",

language = "English",

isbn = "1-4020-0159-2",

pages = "451--461",

editor = "HD Hochheimer and B Kuchta and PK Dorhout and JL Yarger",

booktitle = "FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS",

publisher = "Springer",

address = "United Kingdom",

note = "Conference of the NATO Advanced Research Workshop on Frontiers of High Pressure Reseach II - Application of High Pressure to Low-Dimensional Novel Electronic Materials ; Conference date: 10-06-2001 Through 15-06-2001",

}

Kamenev, KV, Lees, MR, Balakrishnan, G, Paul, DMK, Mcintyre, GJ & Arnold, Z 2001, Pressure effect on the magnetic phase diagram of La_1.4Sr_1.6Mn₂O₇. in HD Hochheimer, B Kuchta, PK Dorhout & JL Yarger (eds), FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS. Springer, DORDRECHT, pp. 451-461, Conference of the NATO Advanced Research Workshop on Frontiers of High Pressure Reseach II - Application of High Pressure to Low-Dimensional Novel Electronic Materials, PRINGREE PK, 10/06/01.

Pressure effect on the magnetic phase diagram of La_1.4Sr_1.6Mn₂O₇. / Kamenev, K V ; Lees, M R ; Balakrishnan, G et al.
FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS. ed. / HD Hochheimer; B Kuchta; PK Dorhout; JL Yarger. DORDRECHT: Springer, 2001. p. 451-461.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Pressure effect on the magnetic phase diagram of La1.4Sr1.6Mn2O7

AU - Kamenev, K V

AU - Lees, M R

AU - Balakrishnan, G

AU - Paul, D M K

AU - Mcintyre, G J

AU - Arnold, Z

PY - 2001

Y1 - 2001

N2 - Magnetic pressure-temperature phase diagram of La1.4Sr1.6Mn2O7 layered manganite has been studied using magnetization measurements and neutron diffraction an single crystals. It has been found that La1.4Sr1.6Mn2O7 is a quasi two-dimensional ferromagnet at temperatures as high as 340 K. At lower temperatures it undergoes a series of phase transitions into magnetic phases with three-dimensional long-range order. At 90 K La1.4Sr1.6Mn2O7 becomes an antiferromagnet and at 65 K it undergoes a transition into a ferromagnetic phase. It has also been shown that applied pressure enhances the long-range antiferromagnetic correlations between Mn2O9 bilayers. These findings have been explained in terms of numerical calculations, taking into account pressure-induced electron transfer between 3d orbitals of the Mn ions.

AB - Magnetic pressure-temperature phase diagram of La1.4Sr1.6Mn2O7 layered manganite has been studied using magnetization measurements and neutron diffraction an single crystals. It has been found that La1.4Sr1.6Mn2O7 is a quasi two-dimensional ferromagnet at temperatures as high as 340 K. At lower temperatures it undergoes a series of phase transitions into magnetic phases with three-dimensional long-range order. At 90 K La1.4Sr1.6Mn2O7 becomes an antiferromagnet and at 65 K it undergoes a transition into a ferromagnetic phase. It has also been shown that applied pressure enhances the long-range antiferromagnetic correlations between Mn2O9 bilayers. These findings have been explained in terms of numerical calculations, taking into account pressure-induced electron transfer between 3d orbitals of the Mn ions.

KW - magnetism

KW - high pressure

KW - layered manganites

KW - colossal magnetoresistance

KW - LAYERED PEROVSKITE STRUCTURE

KW - MANGANITE LA2-2XSR1+2XMN2O7

KW - MAGNETORESISTANCE

KW - CRYSTAL

M3 - Conference contribution

SN - 1-4020-0159-2

SP - 451

EP - 461

BT - FRONTIERS OF HIGH PRESSURE RESEARCH II: APPLICATION OF HIGH PRESSURE TO LOW-DIMENSIONAL NOVEL ELECTRONIC MATERIALS

A2 - Hochheimer, HD

A2 - Kuchta, B

A2 - Dorhout, PK

A2 - Yarger, JL

PB - Springer

CY - DORDRECHT

T2 - Conference of the NATO Advanced Research Workshop on Frontiers of High Pressure Reseach II - Application of High Pressure to Low-Dimensional Novel Electronic Materials

Y2 - 10 June 2001 through 15 June 2001