Designed Metamagnetism in CoMnGe_{1-x}P_{x}

We extend our previous theoretical study of Mn-based orthorhombic metamagnets to those that possess large nearest neighbour Mn-Mn separations (d1>3.22A). Based on our calculations, we design and synthesize a series of alloys, CoMnGe_{1-x}P_{x}, to experimentally demonstrate the validity of the model. Unusually, we predict and prepare several metamagnets from two ferromagnetic end-members, thus demonstrating a new example of how to vary crystal structure, within the Pnma symmetry group, to provide highly tunable metamagnetism

Magneto-elastic coupling and competing entropy changes in substituted CoMnSi metamagnets

We use neutron diffraction, magnetometry and low temperature heat capacity to probe giant magneto-elastic coupling in CoMnSi-based antiferromagnets and to establish the origin of the entropy change that occurs at the metamagnetic transition in such compounds. We find a large difference between the electronic density of states of the antiferromagnetic and high magnetisation states. The magnetic field-induced entropy change is composed of this contribution and a significant counteracting lattice component, deduced from the presence of negative magnetostriction. In calculating the electronic entropy change, we note the importance of using an accurate model of the electronic density of states, which here varies rapidly close to the Fermi energy.Comment: 11 pages, 9 figures. Figures 4 and 6 were updated in v2 of this preprint. In v3, figures 1 and 2 have been updated, while Table II and the abstract have been extended. In v4, Table I has updated with relevant neutron diffraction dat

Capsulata edenensis gen. et sp. nov. a New Cestode with an Unusual Type of Growth, from Limosa lapponica (L.); with Systematic Notes on the Genera Southwellia Moghe, 1925 and Malika Woodland, 1929

Description: The specimens were collected from three Bartailed Godwits shot in the winters of 1956 and 1957. The description below applies mainly to the first infestation found. There are certain differences between the infestations which are noted later. There were up to 150 individuals in each infestation, varying from immature worms consisting of a scolex and a few proglottides to mature strobilas containing some 300 segments and reaching a length of 75 mm. The maximum breadth of the strobila is 1·8 mm. The onset of maturity is accompanied by a marked increase in the breadth of the strobila and the mature proglottides are broader than lon

Research Update: The Mechanocaloric Potential of Spin Crossover Compounds

We present a first evaluation of the potential for spin crossover (SCO) compounds to be considered as a new class of giant mechanocaloric effect materials. From literature data on the variation of the spin crossover temperature with pressure, we estimate the maximum available adiabatic temperature change for several compounds and the relatively low pressures that may be required to observe these effects

Malignant melanoma: a study of 283 cases with comments and suggestions on treatment

The first and basic result of this study is to show that radiation is by no means useless in malignant melanoma. Even as a palliative it appears to increase survival and certainly is a safer and more sure way of relieving local symptoms than any chemotherapeutic agent yet tried extensively. The fact that the established disease can respond in the great majority of cases has been obscured by the relative minority of spectacular failures.In view of this and the disappointing results of surgery at least in certain situations» e.g. trunk and foot lesions it is perhaps worthwhile trying it in an attempt to improve the results in the elderly, unfit and more advanced case in whom the prognosis evEn with - or perhaps especially with - radical surgery is poor.It would appear that any case with obviously involved nodes is beyond help by surgery alone. DICKSON (1958) has shown the improvement which post-operative radiation can achieve in early cases. It is postulated that in the advanoed case intensive radiation may prolong the patient's life and preserve the functional integrity of his extremities with a better chance of so doing if surgery is not embarked upon

Six cases of osteomalacia : five in aged women

During the time I was Resident Medical Officer in the Dundee Parochial Hospital, from September 1900 to January 1903, I had under my care four patients who appeared to be suffering from senile osteomalacia.The fifth case occurred in the Dundee Western Poor House and was under the care of Dr. George Laurence, Dundee, who has kindly given me a short record of the illness.For the history of the sixth case, where the disease occurred in a pregnant woman, I an indebted to Professor Kynoch, Professor of Midwifery, St. Andrews University, who has most kindly placed his notes at my disposal. I saw the patient frequently while studying in his wards in the Dundee Royal Infirmary