Published March 1, 2009 | Version v1
Journal article Metadata-only

Magnetic susceptibility measurement under high pressure and magnetization measurement of S = 1/2 dioptase lattice antiferromagnet

Creators

  • 1. Molecular Photoscience Research Center, Kobe University, Kobe 657-8501 (Japan)
  • 2. Department of Frontier Research and Technology, Kobe University, Kobe 657-8501 (Japan)
  • 3. Graduate School of SCucience, Kobe University, Kobe 657-8501 (Japan)
  • 4. Center for Supports to Research and Education Activities, Kobe University, Kobe 657-8501 (Japan)
  • 5. Department of Applied Physics, University of Fukui, Fukui 910-8507 (Japan)
  • 6. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan)
  • 7. ISSP, University of Tokyo, Kashiwa 277-8581 (Japan)

Description

Natural mineral Dioptase (Cu6Si6O18 c 6H2O) is an S = 1/2 antiferromagnet with a unique spin network which consists of helical chains along the c axis connected by inter chain exchange interactions. In order to study the ground state of dioptase, we have performed the magnetization measurement for B//c (easy axis) at 1.5 K and have found the spin-flop transition at 13 T. Moreover, the pressure effect of the magnetic susceptibility is investigated up to 1.78 GPa using the SQUID magnetometer where TN increased while the broad maximum reflecting the low dimensionality of the system decreased by pressure. The results will be discussed in connection with our previous antiferromagnetic resonance (AFMR) measurement results and the phase diagram obtained by Gros et al.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/150/4/042151

Additional details

Identifiers

DOI
10.1088/1742-6596/150/4/042151;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
150
Journal Issue
4
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
25. international conference on low temperature physics
Acronym
LT25
Dates
6-13 Aug 2008
Place
Amsterdam (Netherlands)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41110290
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; COPPER SILICATES; EXCHANGE INTERACTIONS; GROUND STATES; HYDRATES; MAGNETIC RESONANCE; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; MAGNETOMETERS; PHASE DIAGRAMS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SPIN; SQUID DEVICES
Descriptors DEC
ANGULAR MOMENTUM; COPPER COMPOUNDS; DIAGRAMS; ELECTRONIC EQUIPMENT; ENERGY LEVELS; EQUIPMENT; FLUXMETERS; INFORMATION; INTERACTIONS; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETISM; MATERIALS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; PRESSURE RANGE; RESONANCE; SILICATES; SILICON COMPOUNDS; SUPERCONDUCTING DEVICES; TRANSITION ELEMENT COMPOUNDS