Study of coexistence of ferromagnetism and superconductivity in single-crystal ErRh/sub 4/B/sub 4/
Neutron diffraction and resistivity measurements on single crystals of ErRh/sub 4/B/sub 4/ have revealed that both superconductivity and ferromagnetic order coexist in this material between 0.71 and 1.2/sup 0/K. In this intermediate phase, a linear polarized modulated structure with a wavelength of approximately 100 A is observed. The modulated moment increases faster than the ferromagnetic moment down to 0.71 K and then disappears suddenly, with loss of superconductivity and a transition to a normal ferromagnetic state. This transition is accompanied by temperature hysteresis of about 60 mK. The same hysteresis, in the inverse sense, is exhibited by the ferromagnetic component. We interpret the intermediate phase as being one of coexisting normal ferromagnetic domains and superconducting sinusoidally ordered domains. Evidence of a small percentage of small ferromagnetic regions of size approx. 100 A is also seen in both the intermediate and ferromagnetic phases. 3 figures.
- Research Organization:
- Argonne National Lab., IL (USA); Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6481435
- Report Number(s):
- CONF-810809-32; ON: DE83008507
- Country of Publication:
- United States
- Language:
- English
Similar Records
Study of coexistence of ferromagnetism and superconductivity in single-crystal ErRh/sub 4/B/sub 4/
Ferromagnetic superconductors: Effect of disorder on the coexistence phase in ErRh/sub 4/B/sub 4/ and pseudoternary systems
Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
BORIDES
BORON COMPOUNDS
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ERBIUM BORIDES
ERBIUM COMPOUNDS
FERROMAGNETISM
MAGNETIC MOMENTS
MAGNETISM
MONOCRYSTALS
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
RHODIUM BORIDES
RHODIUM COMPOUNDS
SCATTERING
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS