R. Ranganathan

Publication List Details

Period

1983 - 2009

Number

22

Co-Authors

Lattice disorder and Ferromagnetism in La0.67Ca0.33MnO3 nanoparticle (2008)

Bhowmik, R. N., Poddar, Asok, Ranganathan, R., Majumdar, Chandan

We study the ferromagnetism of La0.67Ca0.33MnO3 in bulk polycrystalline, nanocrystalline and amorphous phase. The structural change from crystalline phase to amorphous phase exhibited a systematic...

Unconventional relaxation in antiferromagnetic CoRh$_2$O$_4$ nanoparticles (2006)

Bhowmik, R. N., Ranganathan, R.

Magnetic relaxation in antiferromagnetic CoRh$_2$O$_4$ nanoparticles is investigated at 2 K by cooling the sample from a temperature (70 K) well above the antiferromagnetic ordering temperature at 27...

Lattice expansion and non-collinear to collinear ferrimagnetic order in MnCr$_2$O$_4$ nanoparticle (2005)

Bhowmik, R. N., Ranganathan, R., Nagarajan, R.

We report magnetic behaviour of MnCr$_2$O$_4$, which belongs to a special class of spinel, known as chromite. Bulk MnCr$_2$O$_4$ shows a sequence of magnetic states, which follows paramagnetic (PM)...

Static magnetic response of clusters in Co_{0.2}Zn_{0.8}Fe_{1.95}Ho_{0.05}O_{4} spinel oxide (2003)

Bhowmik, R. N., Ranganathan, R., Nagarajan, R.

Earlier investigation of Co_{0.2}Zn_{0.8}Fe_{1.95}Ho_{0.05}O_{4} spinel has shown the existence of "super-ferromagnetic " clusters containing Fe^{3+} and Ho^{3+} ions along with small size clusters...

Overview of the Alliance for Cellular Signaling (2002)

Gilman, AG, Simon, MI, Bourne, HR, Harris, BA, Long, R, Ross, EM, ...

The Alliance for Cellular Signaling is a large-scale collaboration designed to answer global questions about signalling networks. Pathways will be studied intensively in two cells-B lymphocytes (the...

Particle size effects in the antiferromagnetic spinel CoRh$_2$O$_4$ (2002)

Bhowmik, R. N., Nagarajan, R., Ranganathan, R.

We report the particle size dependent magnetic behaviour in the antiferromagnetic spinel CoRh2O4. The nanoparticles were obtained by mechanical milling of bulk material, prepared under sintering...

Re-entrant spin glass and magnetoresistance in Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide (2002)

Bhowmik, R. N., Ranganathan, R.

We have investigated the static and dynamic response of magnetic clusters in Co_{0.2}Zn_{0.8}Fe_{1.6}Ti_{0.4}O_4 spinel oxide, where a sequence of magnetic phase transitions, i.e., paramagnetic (PM)...

Magnetic enhancement of Co$_{0.2}$Zn$_{0.8}$Fe$_2$O$_4$ spinel oxide by mechanical milling (2002)

Bhowmik, R. N., Ranganathan, R., Sarkar, S., Bansal, C., Nagarajan, R.

We report the magnetic properties of mechanically milled Co$_{0.2}$Zn$_{0.8}$Fe$_2$O$_4$ spinel oxide. After 24 hours milling of the bulk sample, the XRD spectra show nanostructure with average...

Ultrasonic sensor interface to an articulated joint robot for object detection and distance measurement (1991)

Shetty, KB, Ranganathan, R, Chidambara, MR

A noncontact type sensory system using ultrasonic transducers has been developed and interfaced to a 5 d.o.f. articulated joint robot. The sensor helps the robot to scan the work-area for any object...

Ultrasonic sensor interface to an articulated joint robot for object detection and distance measurement (1991)

Shetty, KB, Ranganathan, R, Chidambara, MR

A noncontact type sensory system using ultrasonic transducers has been developed and interfaced to a 5 d.o.f. articulated joint robot. The sensor helps the robot to scan the work-area for any object...