26th National Symposium on Cryogenics and Superconductivity

22-24 February 2017

VECC

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Magnetization reversal, exchange interaction, and switching behavior studies on Ru doped GdCrO3

Content:

A systematic study on the magnetic properties of Ru doped GdCrO3 (where 0 ≤ x ≤ 0.15) have been carried out by low temperature magnetization measurements. Pure GdCrO3 shows the antiferromagnetic (AFM) ordering at 170K and a spin-reorientation transition around 8 K. Surprisingly, the AFM ordering temperature does not show any variation with the tetravalent Ru doping; while, spin-reorientation completely disappears with 5% Ru doping within the investigated temperature region. All these compounds exhibit magnetization reversal under low applied fields in field-cooled (FC) protocol. Highly delocalized 4d orbitals and occupation number of Ru4+ result in a decrease of antisymmetric exchange constant (D) with doping. Magnetic relaxation study in FC mode reveals the memory effect of pure GdCrO3. Magnetic field-assisted switching behavior study corroborates that magnetic state (positive or, negative) can easily be switched by the application of magnetic field.

Id:

Place:

VECC

1/AF, Bidhan Nagar Kolkata - 700008

Room: Hall B (Annex Auditorium)

Starting date:

24-Feb-2017

15:30 (Asia/Kolkata)

Duration:

15'

Contribution type:

Contributory Talk

Primary Authors:

Mr. DALAL, Biswajit (Indian Association for the Cultivation of Science)

Co-Authors:

Dr. SARKAR, Babusona (Indian Association for the Cultivation of Science)
Prof. DE, Subodh (Indian Association for the Cultivation of Science)

Presenters:

Mr. DALAL, Biswajit

Included in session:

Technical Session 13

Included in track:

Superconducting Materials / Low Temperature Physics