First-order antiferromagnetic transitions of SrMnP and CaMnP single crystals containing corrugated-honeycomb Mn sublattices.

SrMnP and CaMnP are insulators that adopt the trigonal CaAlSi-type structure containing corrugated Mn honeycomb layers. Magnetic susceptibility and heat capacity versus temperature data reveal a weak first-order antiferromagnetic (AFM) transition at the Néel temperature [Formula: see text] K for SrMnP and a strong first-order AFM transition at [Formula: see text] K for CaMnP Both compounds exhibit isotropic and nearly -independent [Formula: see text], suggesting magnetic structures in which nearest-neighbor moments are aligned at [Formula: see text] to each other. The P NMR measurements confirm the strong first-order transition in CaMnP but show critical slowing down above [Formula: see text] for SrMnP, thus also evidencing second-order character.

Electron-phonon coupling enhancement and displacive magnetostructural transition in SrCr As under magneto-Raman spectroscopy.

A Raman spectroscopy study on high quality single crystals of SrCr As (SCA) in the temperature T range 4 K < T < 300 K and high applied magnetic fields up to H = 9 T is presented. The chromium B phonon analysis reveals two anomalous shifts in the frequency, the first below T = 250 K at H = 0 T in the saturated AFM G-type order likely due to an enhanced electron-phonon coupling by the magnetic order, whereas the second anomaly occurs above H = 4 T at T = 4 K likely as a consequence of a magnetostructural displacive transition. Renormalization of the electronic Raman spectra in both studies reveals a decrease in the electronic density of states with decreasing T and increasing H, respectively, with consequent changes in the Fermi surface, which are intrinsically related to the observed anomalies.

Short-range ferromagnetic order due to Ir substitutions in single-crystalline Ba(Co Ir )As (0 ⩽ x ⩽ 0.25).

The ternary-arsenide compound BaCoAs was previously proposed to be in proximity to a quantum-critical point where long-range ferromagnetic (FM) order is suppressed by quantum fluctuations. Here we report the effect of Ir substitutions for Co on the magnetic and thermal properties of Ba[Formula: see text] (0 ⩽ x ⩽ 0.25) single crystals.

Palliative Care Challenges and Strategies for the Management Amid COVID-19 Pandemic in India: Perspectives of Palliative Care Nurses, Cancer Patients, and Caregivers.

The WHO selected 2020 to recognize the work of nurses and midwives because it is the bicentenary of the birth of the founder of modern nursing, Florence Nightingale. It has been demonstrated amply now as the nurses are the largest sector of health-care workers in every country, playing a pivotal role in response to the novel coronavirus (COVID-19) pandemic worldwide. Every day, nurses are working tirelessly by leaving their homes to assist the sick, allay community fears, and address concerns.