Goa University

output

19972022

most citedThe importance of inversion disorder in the visible light induced persistent luminescence in Cr

^{3 +}

doped AB

_{2}

_{4}

(A = Zn or Mg and B = Ga or Al)

162 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing cond-mat.mtrl-sciShow all

49 papers · 1 filter

cond-mat.mtrl-sci2022★ 15 cited

Antisite disorder and phase segregation in Mn $_{2}$ NiSn

S. V. Malik, E. T. Dias, A. K. Nigam +1

A systematic study of crystal structure, local structure, magnetic and transport properties in quenched and temper annealed Ni $_{2 - x}$ Mn $_{1 + x}$ Sn alloys indicate the formation of…

cond-mat.mtrl-sci2021★ 11 cited

Randomly packed Ni $_{2}$ MnIn and NiMn structural units in off stoichiometric Ni $_{2}$ Mn $_{2 - y}$ In $_{y}$ alloys

R. Nevgi, E. T. Dias, K. R. Priolkar

Ni $_{2}$ Mn $_{2 - y}$ In $_{y}$ alloys transform from the martensitic $L 1_{0}$ antiferromagnetic ground state near $y = 0$ to austenitic ferromagnetic $L 2_{1}$ Heusler phase near $y = 1$ due to…

cond-mat.mtrl-sci2021★ 3 cited

Structural defects responsible for strain glassy transition in Ni $_{50 + x}$ Ti $_{50 - x}$

R. Nevgi, Simone Pollastri, Giuliana Aquilanti +1

The strain glassy phase is produced by doping a small percentage of impurity in a martensitic alloy. Its ground state is conceived to consist of martensitic nano domains spatially…

cond-mat.mtrl-sci2021★ 6 cited

Strain glass versus antisite disorder induced ferromagnetic state in Fe doped Ni-Mn-In Heusler martensites

Rukma Nevgi, K. R. Priolkar, Mehmet Acet

Fe doping in Ni $_{2}$ Mn $_{1.5}$ In $_{0.5}$ results in suppression of the martensitic phase via two contrasting routes. In Ni $_{2}$ Mn $_{1.5 - x}$ Fe $_{x}$ In $_{0.5}$ , the martensitic phase i…

cond-mat.mtrl-sci2020★ 8 cited

Lattice strain accommodation and absence of pre-transition phases in Ni $_{50}$ Mn $_{25 + x}$ In $_{25 - x}$

R. Nevgi, K. R. Priolkar, L. Righi +4

The stoichiometric Ni $_{50}$ Mn $_{25}$ In $_{25}$ Heusler alloy transforms from a stable ferromagnetic austenitic ground state to an incommensurate modulated martensitic ground state…

cond-mat.mtrl-sci2020★ 7 cited

$d$ band filling and magnetic phase separation in transition metal-doped Mn $_{3}$ SnC

V. N. Gaonkar, E. T. Dias, A. K. Nigam +1

The structural and magnetic properties of transition metal-doped Mn $_{3}$ SnC are studied with an aim to understand the effect of transition metal atom on magnetostructural properties…

cond-mat.mtrl-sci2020★ 3 cited

Packing fraction related distortion of Mn $_{6}$ C octahedra and its effect on the first order magnetic transition in Mn based antiperovskites

Aishwarya Mungale, K. R. Priolkar

In this paper, we attempt to understand the cause of magnetostructural transformation in Mn-based antiperovskites by calculating EXAFS at the K edges of constituent metal atoms in…

cond-mat.mtrl-sci2020★ 6 cited

Importance of site occupancy and absence of strain glassy phase in Ni $_{2 - x}$ Fe $_{x}$ Mn $_{1.5}$ In $_{0.5}$

R. Nevgi, Gangadhar Das, M. Acet +1

Martensitic transition temperature steadily decreases in Ni $_{2 - x}$ Fe $_{x}$ Mn $_{1.5}$ In $_{0.5}$ and is completely suppressed at $x$ = 0.2. Despite suppression of martensitic transi…

cond-mat.mtrl-sci2020★ 8 cited

Modulations in magnetostructural coupling in C and Sn deficient Mn $_{3}$ SnC

V. N. Gaonkar, E. T. Dias, A. Das +2

The structural and magnetic interactions in stoichiometric (Mn $_{3}$ SnC), carbon deficient (Mn $_{3}$ SnC $_{0.8}$ ) and tin deficient (Mn $_{3}$ Sn $_{0.85}$ C) antiperovskite compounds are stu…

cond-mat.mtrl-sci2019★ 2 cited

Absence of first order magnetic transition, a curious case of Mn3InC

E. T. Dias, A. Das, A. Hoser +3

The volume expanding magnetostructural transition in Mn $_{3}$ GaC and Mn $_{3}$ SnC has been identified to be due to distortion of Mn $_{6}$ C octahedra. Despite a similar lattice volume as M…

cond-mat.mtrl-sci2018★ 15 cited

Phase separation and effect of strain on magnetic properties of Mn $_{3}$ Ga $_{1 - x}$ Sn $_{x}$ C

E. T. Dias, A. Das, A. Hoser +3

While the unit cell volume of compounds belonging to the Mn $_{3}$ Ga $_{1 - x}$ Sn $_{x}$ C, (0 $\leq x \leq$ 1) series shows a conformity with Vegard's law, their magnetic and magnetocaloric…

cond-mat.mtrl-sci2018★ 16 cited

Role of Tin and Carbon in the magnetic interactions in Mn $_{3}$ SnC

V. N. Gaonkar, E. T. Dias, Arka Bikash Dey +3

In this paper we attempt to understand the role of tin and carbon in magnetic interactions in Mn $_{3}$ SnC. Mn $_{3}$ SnC exhibits a time dependent magnetic configuration and a complex ma…

cond-mat.mtrl-sci2018★ 11 cited

Unusual Strain glassy phase in Fe doped Ni $_{2}$ Mn $_{1.5}$ In $_{0.5}$

R. Nevgi, K. R. Priolkar

Fe doped Ni $_{2}$ Mn $_{1.5}$ In $_{0.5}$ , particularly, Ni $_{2}$ Mn $_{1.4}$ Fe $_{0.1}$ In $_{0.5}$ , despite having an incommensurate, modulated 7M martensitic structure at room temperature ex…

cond-mat.mtrl-sci2018★ 37 cited

Role of local structural distortion in driving ferroelectricity in GdCrO3

Sudipta Mahana, U. Manju, Pronoy Nandi +3

Temperature dependent synchrotron x-ray diffraction and extended x-ray absorption fine structure (EXAFS) studies were performed to understand the role of structural characteristics…

cond-mat.mtrl-sci2017★ 13 cited

Mechanism of magnetostructural transformation in multifunctional Mn $_{3}$ GaC

E. T. Dias, K. R. Priolkar, R. Ranjan +2

Mn $_{3}$ GaC undergoes a ferromagnetic to antiferromagnetic, volume discontinuous cubic-cubic phase transition as a function of temperature, pressure and magnetic field. Through a ser…

cond-mat.mtrl-sci2017★ 16 cited

Phase separated magnetic ground state in Mn $_{3}$ Ga $_{0.45}$ Sn $_{0.55}$ C

E. T. Dias, K. R. Priolkar, A. K. Nigam +2

Existence of non-ergodic ground states is considered as a precursor to a first order long range magnetostructural transformation. Mn $_{3}$ Ga $_{0.45}$ Sn $_{0.55}$ C lies compositionally…

cond-mat.mtrl-sci2017★ 6 cited

Effect of site occupancy disorder on Martensitic properties of Mn $_{2}$ NiIn type alloys: x-ray absorption fine structure study

D. N. Lobo, K. R. Priolkar, A. Koide +1

We have carried out \textit{ab-initio} calculations of local structure of Mn and Ni in Mn $_{2}$ Ni $_{1.5}$ In $_{0.5}$ alloy with different site occupancies in order to understand the…

cond-mat.mtrl-sci2017★ 37 cited

Controlling disorder in the ZnGa $_{2}$ O $_{4}$ :Cr $^{3 +}$ persistent phosphor by Mg $^{2 +}$ substitution

Neelima Basavaraju, Kaustubh R. Priolkar, Aurélie Bessière +5

We have studied in this work the effect of increasing structural disorder on the persistent luminescence of Cr $^{3 +}$ doped zinc gallate spinel. This disorder was introduced by pro…

cond-mat.mtrl-sci2016★ 1 cited

Does thiosemicarbazide lead nitrate (TSLN) crystal exist?

R. Fernandes, Bikshandarkoil R. Srinivasan

The authors of a recent paper (Optik 125 (2014) 2022-2025) claim to have grown a so called thiosemicarbazide lead nitrate (TSLN) crystal by the slow evaporation method. In this com…

cond-mat.mtrl-sci2015★ 9 cited

Comments on the papers recently published by Kalaivani et al

B. R. Srinivasan, K. U. Narvekar

We argue that the so-called l lysinium succinate (journal of crystal growth 426 (2015) 135), zinc chloride doped l lysinium succinate (journal of crystal growth 428 (2015) 24), and…

cond-mat.mtrl-sci2015

Comments on the paper: An extensive investigation on nucleation, growth parameters, crystalline perfection, spectroscopy, thermal, optical, microhardness, dielectric and SHG studies on potential NLO crystal Ammonium Hydrogen L-tartarte

Bikshandarkoil R. Srinivasan, V. S. Nadkarni

The authors of the title paper report to have grown ammonium hydrogen L-tartrate (1) by use of L-glutamine and L-tartaric acid in 1:1 mole ratio. Many points of criticism pertainin…

cond-mat.mtrl-sci2015★ 4 cited

Comments on the paper: Crystal growth and comparison of vibrational and thermal properties of semi-organic nonlinear optical materials

Bikshandarkoil R Srinivasan, Royle Fernandes

Gunasekaran et al (Pramana J. Phys. 75 683-690 (2010)) report to have grown the nonlinear optical crystals urea thiourea mercuric chloride (UTHC) and urea thiourea mercuric sulphat…

cond-mat.mtrl-sci2015

Does a glycine sodium nitrite crystal exist?

Kiran T. Dhavskar, Bikshandarkoil R. Srinivasan

The glycine sodium nitrite crystal reported by Khandpekar and Pati in the paper entitled, Synthesis and characterisation of glycine sodium nitrite crystals having non linear optica…

cond-mat.mtrl-sci2015★ 2 cited

Comments on - Growth and characterization of organic nonlinear optical crystal: L-Valinium salicylate (LVS) [Optik 125 (2014) 2713-2715]

S. Natarajan, K. Moovendaran, B. R. Srinivasan

The slow evaporation of an aqueous solution containing L-valine and salicylic acid results in the fractional crystallization of salicylic acid and not any so called L-valinium sali…

Antisite disorder and phase segregation in Mn2​NiSn

Randomly packed Ni2​MnIn and NiMn structural units in off stoichiometric Ni2​Mn2−y​Iny​ alloys

Structural defects responsible for strain glassy transition in Ni50+x​Ti50−x​

Strain glass versus antisite disorder induced ferromagnetic state in Fe doped Ni-Mn-In Heusler martensites

Lattice strain accommodation and absence of pre-transition phases in Ni50​Mn25+x​In25−x​

d band filling and magnetic phase separation in transition metal-doped Mn3​SnC

Packing fraction related distortion of Mn6​C octahedra and its effect on the first order magnetic transition in Mn based antiperovskites

Importance of site occupancy and absence of strain glassy phase in Ni2−x​Fex​Mn1.5​In0.5​

Modulations in magnetostructural coupling in C and Sn deficient Mn3​SnC