Published January 2006 | Version v1
Journal article Metadata-only

Effect of high pressure on crystals and magnetic structures of La0.7Sr0.3CoO3 cobaltite

Creators

  • 1. Ob''edinennyj Inst. Yadernykh Issledovanij, Dubna (Joint Institute for Nuclear Research (JINR))
  • 2. UrO RAN, Inst. Fiziki Metallov, Ekaterinburg (Russian Federation)
  • 3. Rossijskij Nauchnyj Tsentr Kurchatovskij Inst., Moscow (Russian Federation)

Description

By means of neutron diffraction one investigated into atomic and magnetic structures of La0.7Sr0.3CoO3 cobaltite under up to 4.2 GPa high pressures within 16-300 K temperature range. One derived the baric dependences of the structural parameters. The high pressure effect results in the Curie temperature drop with dTC/dP=-8.3(8) K/GPa. TC drop is determined to result from partial transition of Co3+ ions from the intermediate spin (t2g5eg1, S=1) into the low-spin (t2g6, S=0) state under pressure

Abstract (Russian)

Методом нейтронной дифракции исследована атомная и магнитная структуры кобальтита La0.7Sr0.3CoO3 при высоких давлениях до 4.2 ГПа в диапазоне температур 16-300 К. Получены барические зависимости структурных параметров. Влияние высокого давления приводит к уменьшению температуры Кюри с dTC/dP=-8.3(8) К/ГПа. Установлено, что уменьшение ТK связано с частичным переходом ионов Co3+ из промежуточного спинового (t2g5eg1, S=1) в низкоспиновое (t2g6, S=0) состояние под давлением

Additional details

Additional titles

Original title (Russian)
Влияние высокого давления на кристаллическую и магнитную структуры кобальтита Ла

Publishing Information

Journal Title
Fizika Tverdogo Tela
Journal Volume
48
Journal Issue
1
Journal Page Range
p. 90-94
ISSN
0367-3294
CODEN
FTVTAC

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
38015618
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BOND LENGTHS; COBALT OXIDES; CURIE POINT; EXPERIMENTAL DATA; FERROMAGNETISM; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; MAGNETIC MOMENTS; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COBALT COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; DIMENSIONS; INFORMATION; LENGTH; MAGNETISM; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRESSURE RANGE; RARE EARTH COMPOUNDS; SCATTERING; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE

Optional Information

Notes
22 refs., 5 figs., 1 tab.